Common use of Certificate No Clause in Contracts

Certificate No. 1-A-2-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-A-5-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 5.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 1,800,000 of this Class: CUSIP: 55265K MA 4 MD 8 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 A-5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October With respect to any Mortgage Loan, the later of (i) the date of origination of such Mortgage Loan or (ii) July 1, 2002 2000 First Distribution DateDate : November August 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2000 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial ) : $79,000,000.00 Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$79,000,000.00 Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage 100.00% Pass-Through Rate : Variable CUSIP : 68389F __ _ Class : A Assumed Maturity Date : September 2030 Option One Mortgage Loan Trust 2000-3 Asset-Backed Certificates, Series 20022000-7 3 Class 1-A-2 A evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien, adjustable rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.OPTION ONE MORTGAGE ACCEPTANCE CORPORATION, as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class A Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class A Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Master Servicer, or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class A Certificate (obtained by dividing the Denomination of this Class A Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Option One Mortgage Asset Securitization Transactions, Inc. Acceptance Corporation (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above July 1, 2000 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.Option One Mortgage Corporation, as transferor master servicer (the "TransferorMaster Servicer"), and Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Associationa xxxxxnal banking association, as trustee Trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class A Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class A Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Class A Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class A Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): ) : $ Initial Certificate Principal Balances of all Certificates $8,333,333 of this ClassClass : CUSIP$ CUSIP : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONSInterest Rate : Maturity Date : INDYMAC MBS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Residential Asset Securitization Trust 200_-__ Mortgage Pass-Through Certificates, Series 2002200_-__ Class A-7 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Class A-R Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor properties. Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Seller, the Master Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that __________________ is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization TransactionsIndyMac MBS, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.IndyMac Bank, F.S.B., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as seller and master servicer (the "Seller" or the "Master Servicer", as appropriate), xxx Xachovia Bank, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the Corporate Trust Office or the office or agency maintained by the Trustee in New York, New York. No transfer of a Class A-R Certificate shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee or the Master Servicer, (ii) if the purchaser is an insurance company, a representation that the purchaser is an insurance company which is purchasing such Certificates with funds contained in an "insurance company general account" (as such term is defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60")) and that the purchase and holding of such Certificates are covered under PTCE 95-60 or (iii) in the case of any such Class A-R Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or Section 4975 of the Code (or comparable provisions of any subsequent enactments), or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement, or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Master Servicer to the effect that the purchase or holding of such Class A-R Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee or the Master Servicer to any obligation in addition to those undertaken in this Agreement, which Opinion of Counsel shall not be an expense of the Trustee or the Master Servicer. Notwithstanding anything else to the contrary herein, any purported transfer of a Class A-R Certificate to or on behalf of an employee benefit plan subject to ERISA or to the Code without the Opinion of Counsel satisfactory to the Trustee as described above shall be void and of no effect. Each Holder of this Class A-R Certificate will be deemed to have agreed to be bound by the restrictions of the Agreement, including but not limited to the restrictions that (i) each person holding or acquiring any Ownership Interest in this Class A-R Certificate must be a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be transferred without delivery to the Trustee of (a) a transfer affidavit of the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form described in the Agreement, (iii) each person holding or acquiring any Ownership Interest in this Class A-R Certificate must agree to require a transfer affidavit and to deliver a transfer certificate to the Trustee as required pursuant to the Agreement, (iv) each person holding or acquiring an Ownership Interest in this Class A-R Certificate must agree not to transfer an Ownership Interest in this Class A-R Certificate if it has actual knowledge that the proposed transferee is not a Permitted Transferee and (v) any attempted or purported transfer of any Ownership Interest in this Class A-R Certificate in violation of such restrictions will be absolutely null and void and will vest no rights in the purported transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 12-A-2-A-11-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 13,121,000 of this Class: CUSIP: 55265K MA 4 MQ 9 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 12-A-2 A-11 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 2 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 12-A-2-A-6-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 7,600,000 of this Class: CUSIP: 55265K MA 4 MK 2 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 12-A-2 A-6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 2 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October 1, 2002 First Distribution DateDate : November 2520, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): ) : $2,378,690 Initial Certificate Principal Balances of all Certificates $8,333,333 of this ClassClass : CUSIP$2,378,690 Percentage Interest of this Certificate ("Denomination") : 55265K MA 4 100% CUSIP : 36228F JU 1 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST GSAMP Trust 2002-7 WF Mortgage Pass-Through Certificates, Series 2002-7 WF Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Depositor or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect pursuant to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate between GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo and Deutsche Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Trust Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee, which Opinion of Counsel shall not be an expense of the Trustee or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.. * * *

Certificate No. 12-A-2-A-1-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 3.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 99,624,000 of this Class: CUSIP: 55265K MA 4 ME 6 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 12-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 2 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-A-1-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 5.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 352,108,667 of this Class: CUSIP: 55265K MA 4 LZ 0 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : September 1, 2004 First Distribution Date : October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 ISIN : GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAA Home Equity Trust 2004-7 Mortgage Pass8 Asset-Through Backed Certificates, Series 20022004-7 8 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the DepositorDepositor the Master Servicer, the Servicer to Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling Master Servicing and Servicing Trust Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Deutsche Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans ) and custodian, Wells Fargo, N.A., as Master Servicer (in Loan Group 1 pursuant such capacity, to the terms of the Agreement"Master Serxxxxx") and Securities Administrator (in such capacity, to "Securities Administrator") and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Securities Administrator for such purposes or the office or agency maintained by the Securities Administrator. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Securities Administrator shall require the transferor to execute a transferor certificate (in substantially the form attached to the Trust Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Securities Administrator that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.Securities Administrator. * * *

Certificate No. 1-A-2-A-1-[__] Cut-off Date: October 1, 2002 2004 First Distribution Date: November 25, 2002 2004 Last Scheduled Distribution Date: November October 25, 2017 2034 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______[ ] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 70,640,000 of this Class: CUSIP: 55265K MA 4 576434 WV 2 ISIN: US576434WV28 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ALTERNATIVE LOAN TRUST 20022004-7 11 Mortgage Pass-Through Certificates, Series 20022004-7 11 Class 1-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A.National Association, as master servicer (in such capxxxxx, the "Servicer"), xxx Xachovia Banktrust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Association, as a custodian and as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution Date: November September 25, 2002 Last Scheduled 2004 Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance Date Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 36242D EE 9 ISIN : US36242DEE94 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAA Home Equity Trust 2004-7 Mortgage PassAsset-Through Backed Certificates, Series 20022004-7 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the DepositorDepositor the Master Servicer, the Servicer Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _______] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling Master Servicing and Servicing Trust Agreement dated as of the Cut-off Off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate between GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Deutsche Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on ) and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the Mortgage Loans "Mastxx Xxrvicer") and securities administrator (in Loan Group 1 pursuant to such capacity, the terms of the Agreement"Securities Administrator) and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the TrusteeSecurities Administrator.

Certificate No. 1-A-2-[__] A-1- Cut-off Date: October July 1, 2002 First Distribution Date: November 25August 26, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Principal Balance of this Certificate ("Denomination"): $296,163,000 Initial Certificate Principal Balance of this Certificate Class A-1 Certificates: $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class296,163,000 Latest Possible Maturity Date: October 25, 2032 CUSIP: 55265K MA 4 MORTGAGE 07384Y EM4 Interest Rate: For each Distribution Date, the lesser of (i) One-Month LIBOR plus, for any Distribution Date (a) on or prior to the Optional Termination Date, 0.33% and (b) thereafter, 0.66% and (ii) the applicable Interest Rate Cap. BEAR STEARNS ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION BACKED SECURITIES TRUST 2002-7 Mortgage Pass2 Xxset-Through Backed Certificates, Series 2002-7 Class 1-A-2 2 evidencing a percentage interest in the distributions allocable to the Class of Certificates indicated on the first page of the above-referenced Class this Certificate with respect to a Trust Fund consisting primarily of three pools a pool of conventional conventional, fixed- and adjustable-rate mortgage loans (the "Mortgage Loans") secured by first and second liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor (the "Trust Assets"). The Certificate Principal in respect Balance of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Initial Certificate Principal Balance of this Certificate as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Seller, the Master Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor most of the Mortgage Loans Trust Assets are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the same Class) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans Trust Assets deposited by Mortgage Bear Stearns Asset Securitization TransactionsBacked Securities, Inc. (the "Depositor"). The Trust Xxxxx Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above July 1, 2002 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.EMC Mortgage Corporation as seller and master servicer (in its capacity as seller, as transferor (the "TransferorSeller" and in its capacity as master servicer, the "EMC Master Servicer"), Wells Fargo Bank Minnesota, N.A., National Association as master servicer sxxxxxer and securities administrator (in its capacity as master servicer, the "Wells Master Servicer" and in its capacity as securities admxxxxxrator, the "), xxx Xachovia BankSecurities Administrator" and Bank One, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on The EMC Master Servicer and the Mortgage Loans in Loan Group 1 pursuant Wells Master Servicer are together referred to as the terms of the Agreement. "Mastex Xxxvicers" and individually sometimes referred to as a "Master Servicer." To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Pursuant to the terms of the Agreement, a distribution will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (the "Distribution Date"), commencing on the first Distribution Date specified above, to the Person in whose name this Certificate is registered on the applicable Record Date in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to Holders of the Certificates of the Class indicated on the first page of this certificate on such Distribution Date pursuant to Section 5.04 of the Agreement. Distributions on this Certificate shall be made by wire transfer of immediately available funds to the account of the registered Holder hereof at a bank or other entity having appropriate facilities therefor, if such Certificateholder shall have so notified the Trustee in writing at least five Business Days prior to the related Record Date or, if not, by check mailed by first class mail to the address of such Certificateholder appearing in the Certificate Register. The final distribution on each Certificate will be made in like manner, but only upon presentment and surrender of such Certificate at the Corporate Trust Office of the Trustee or such other location specified in the notice to Certificateholders of such final distribution. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless the certificate of authentication hereon has been manually countersigned executed by an authorized signatory officer of the Trustee.. * * *

Certificate No. 1-A-2-[__] Cut-off DateDate : October May 1, 2002 2001 First Distribution DateDate : November June 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2001 Initial Certificate Principal Balance Notional Amount of this Certificate $[______] ("Denomination"): ) : Initial Certificate Principal Balances Class Notional Amount of all Certificates $8,333,333 of this ClassClass : CUSIPPercentage Interest : 55265K MA 4 CUSIP : Pass-Through Rate : Maturity Date : CREDIT SUISSE FIRST BOSTON MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002CSFB ABS Trust Series 2001-7 HE12 CSFB Mortgage Pass-Through Certificates, Series 20022001-7 HE12 Class 1A-A-2 IO evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of fixed rate and adjustable rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties properties. Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc.Securities Corp., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Seller, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ CEDE & CO. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities DLJ Mortgage Capital, Inc., as transferor seller (the in such capacity, "TransferorSeller"), Wells Fargo Bank Minnesota, N.A.Calmco Servicing L.P., as master servicer (the in such capacity, "Servicer"), xxx Xachovia Bank, ) and U.S. Bank National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 19-A-2-A-1-[__] Cut-off Date: October 1, 2002 2004 First Distribution Date: November 25, 2002 2004 Last Scheduled Distribution Date: November October 25, 2017 2024 Pass-Through Rate: Variable in accordance with the Agreement 5.25% Initial Certificate Principal Balance of this Certificate $[______[ ] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 25,404,000 of this Class: CUSIP: 55265K MA 4 576434 XF 6 ISIN: US576434XF68 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ALTERNATIVE LOAN TRUST 20022004-7 11 Mortgage Pass-Through Certificates, Series 20022004-7 11 Class 19-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A.National Association, as master servicer (in such capxxxxx, the "Servicer"), xxx Xachovia Banktrust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Association, as a custodian and as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 12-A-2-A-9-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 50,500,000 of this Class: CUSIP: 55265K MA 4 MN 6 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 12-A-2 A-9 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 2 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 17-A-2-A-8-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 5,000,000 of this Class: CUSIP: 55265K MA KY 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October April 1, 2002 2004 First Distribution DateDate : November May 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) 100% CUSIP : CUSIP36228F S6 4 ISIN : 55265K MA 4 US36228FS642 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 HE1 Mortgage Pass-Through Certificates, Series 20022004-7 HE1 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above April 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Ocwen Federal Bank Minnesota, N.A.FSB, as master servicer, Chase Manhattan Mortgage Corporation, as servicer (collectively, the "ServicerServicers"), xxx Xachovia Bank, ) and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 16-A-2-A-1-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 35,000,000 of this Class: CUSIP: 55265K MA 4 KQ 1 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 6 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] P-1 Cut-off DateDate : October July 1, 2002 2004 First Distribution DateDate : November August 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 HE5 Mortgage PassXxxx-Through CertificatesXhxxxxx Xertificates, Series 20022004-7 HE5 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Countrywide, HomEq, Chase, Accredited, NC Capital or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Deutsche Bank National Trust Company, as NIM Trustee, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank MinnesotaChasx, N.A.Xxxnxxxxxxx Home Loans Servicing LP, as master servicer (the "ServicerCountrywide"), xxx Xachovia BankHomEq Servicing Corporation, as servicer ("HomEq"), Manhattan Mortgage Corporation, as servicer ("Chase"), Accredited Home Lenders, Inc., as a responsible party ("Accredited"), NC Capital Corporation, as a responsible party ("NC Capital") and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes, or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October July 1, 2002 2004 First Distribution DateDate : November August 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 36242D AN 3 ISIN : US36242DAN30 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 HE2 Mortgage Pass-Through Certificates, Series 20022004-7 HE2 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above July 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Ocwen Federal Bank Minnesota, N.A.FSB, as master servicer, Chase Manhattan Mortgage Corporation, as servicer, Countrywide Home Loans Servicing LP, as servicer (collectively, the "ServicerServicers"), xxx Xachovia Bank, Ameriquest Mortgage Company ("Ameriquest") and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purpose. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. ***

Certificate No. 1A-A-2-[__] LR-1 Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November 25, 2017 2032 Pass-Through Rate: Variable Floating in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______[ ] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 50 of this Class: CUSIP: 55265K MA 4 576433 CA 2 ISIN: US576433CA28 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ADJUSTABLE RATE MORTGAGES TRUST 2002-7 4 Class A-LR Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 4 evidencing a percentage interest in the distributions allocable to the Class A-LR Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that ________________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor")transferor, Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia ) axx XXMorgan Chase Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Group 4 Mortgage Loans in Loan Group 1 pursuant to the terms of the AgreementLoans. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-LR Certificate at the Corporate Trust Office of the Trustee. No transfer of a Class A-LR Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or Similar Law, nor a person acting on behalf of any such plan, which representation letter shall not be an expense of the Trustee or the Servicer. Notwithstanding anything else to the contrary herein any purported transfer of a Class A-R Certificate to or on behalf of an employee benefit plan subject to ERISA, the Code or Similar Law shall be void and of no effect. Each Holder of this Class A-LR Certificate will be deemed to have agreed to be bound by the restrictions of the Agreement, including but not limited to the restrictions that (i) each person holding or acquiring any Ownership Interest in this Class A-LR Certificate must be a Permitted Transferee, (ii) no Ownership Interest in this Class A-LR Certificate may be transferred without delivery to the Trustee of (a) a transfer affidavit of the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form described in the Agreement, (iii) each person holding or acquiring any Ownership Interest in this Class A-LR Certificate must agree to require a transfer affidavit and to deliver a transfer certificate to the Trustee as required pursuant to the Agreement, (iv) each person holding or acquiring an Ownership Interest in this Class A-LR Certificate must agree not to transfer an Ownership Interest in this Class A-LR Certificate if it has actual knowledge that the proposed transferee is not a Permitted Transferee and (v) any attempted or purported transfer of any Ownership Interest in this Class A-LR Certificate in violation of such restrictions will be absolutely null and void and will vest no rights in the purported transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] X-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Cxxxxxx X Xxx. Trust 2004-7 Mortgage PassHE7 Mortgagx Xxxx-Through Xxxxxxx Certificates, Series 20022004-7 HE7 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley Mortgage Capital Inc., is the registered owner of the Percentage Interest Pexxxxxxgx Xxxxxest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chasx Xxxxaxxxx Xxrtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, HomEq Servicing Corporation, as servicer, New Century Mortgage Corporation, as servicer, Aames Capital Corporation, as a responsible party, MILA, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicers, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Depositor, the Trustee or the Servicers to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. ***

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October April 1, 2002 2004 First Distribution DateDate : November May 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 36228F S5 6 ISIN : US36228FS568 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 HE1 Mortgage Pass-Through Certificates, Series 20022004-7 HE1 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above April 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Ocwen Federal Bank Minnesota, N.A.FSB, as master servicer, Chase Manhattan Mortgage Corporation, as servicer (collectively, the "ServicerServicers"), xxx Xachovia Bank, ) and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purpose. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] X-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Capxxxx X Xxx. Xxust 2004-7 HE6 Mortgage PassPxxx-Through CertificatesXxrxxxx Xxrtificates, Series 20022004-7 HE6 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley Mortgage Capital Inc. is the registered owner of the Percentage Interest Percxxxxxx Xxxxxxxt evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chase Xxxxxtxxx Xxxtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, HomEq Servicing Corporation, as servicer, Accredited Home Lenders, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicers, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Trustee or the Servicers to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November 25September 27, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2004 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial ) : $ 22,925,000.00 Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$ 22,925,000.00 Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage 100.00% Pass-Through Rate : Variable CUSIP : 317350 BE 5 Class : M-2 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-2 Asset-Backed Certificates, Series 20022004-7 2 Class 1-A-2 M-2 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class M-2 Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class M-2 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class M-2 Certificate (obtained by dividing the Denomination of this Class M-2 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Financial Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above August 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.HomEq Servicing Corporation, as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bankand Deutsche Bank National Trust Company, National Associationa national banking association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class M-2 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class M-2 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. No transfer of this Certificate to a Plan subject to ERISA or Section 4975 of the Code, any Person acting, directly or indirectly, on behalf of any such Plan or any person using Plan Assets to acquire this Certificate shall be made except in accordance with Section 5.02(d) of the Agreement. Reference is hereby made to the further provisions of this Class M-2 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class M-2 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] X-1 Cut-off DateDate : October June 1, 2002 2004 First Distribution DateDate : November 25July 26, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley AXX Xxxixxx X Xnc. Trust 2004-7 Mortgage PassHE4 Moxxxxxx Xxxx-Through Xxrough Certificates, Series 20022004-7 HE4 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Deutsche Bank National Trust Company, as NIM Trustee, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Xxxxx Xxxxxxxan Mortgage Corporation, as master servicer (the "ServicerChase"), xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer ("Countrywide"), HomEq Servicing Corporation, as servicer ("HomEq"), Aames Capital Corporation, as a responsible party ("Aames"), Accredited Home Lenders, Inc., as a responsible party ("Accredited"), NC Capital Corporation, as a responsible party ("NC Capital") and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Trustee or the Servicer to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : October December 1, 2002 2004 First Distribution DateDate : November January 25, 2002 Last Scheduled Distribution Date2005 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, ) 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Capxxxx X Xxx. Xxust 2004-7 WMC3 Mortgage PassXxxx-Through Txxxxxx Certificates, Series 20022004-7 WMC3 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley & Co. Incorporated is the registered owner of the Percentage Interest evidenced by this Certificate in certain Percenxxxx Xnxxxxxx specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Counxxxxxxe Xxxx Xoans Servicing LP, as master servicer (the "Servicer"), xxx Xachovia BankWMC Mortgage Corp., as responsible party (the "Responsible Party"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 17-A-2-A-12-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 1,052,000 of this Class: CUSIP: 55265K MA 4 LC 1 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October April 1, 2002 2004 First Distribution DateDate : November May 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 [36228F S8 0] ISIN: : [US63228FS808] GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 NC1 Mortgage Pass-Through Certificates, Series 20022004-7 NC1 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above April 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Litton Loan Servicing LP, as master servicer servicer, New Century Mortgage Corporation, xx xervicer (collectively, the "Servicers"), NC Capital Corporation, as responsible party (the "ServicerResponsible Party"), xxx Xachovia Bank, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 19-A-2-A-1-[__] Cut-off Date: October June 1, 2002 2004 First Distribution Date: November July 25, 2002 2004 Last Scheduled Distribution Date: November July 25, 2017 2034 Pass-Through Rate: Variable in accordance with the Agreement 5.75% Initial Certificate Principal Balance of this Certificate $[______[ ] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 40,000,000 of this Class: CUSIP: 55265K MA 4 576434 SM 7] ISIN: US576434SM74 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ALTERNATIVE LOAN TRUST 20022004-7 6 Mortgage Pass-Through Certificates, Series 20022004-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A., as master servicer (in such capacity, the "ServicerServxxxx"), xxx Xachovia trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Association, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 17-A-2-A-7-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 3,000,000 of this Class: CUSIP: 55265K MA 4 KX 6 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__1][2] Cut-off DateDate : October May 1, 2002 2001 First Distribution DateDate : November June 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2001 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): ) : $ Initial Certificate Principal Balances of all Certificates $8,333,333 of this ClassClass : CUSIP$ CUSIP : 55265K MA 4 Pass-Through Rate : Maturity Date : CREDIT SUISSE FIRST BOSTON MORTGAGE ASSET SECURITIZATION TRANSACTIONSSECURITIES CORP. Credit Suisse First Boston Mortgage Securities Corp., INC. MASTR ASSET SECURITIZATION TRUST 2002Mortgage-7 Mortgage Backed Pass-Through Certificates, Series 20022001-7 11 Class 1-A-2 AR evidencing a percentage interest in the distributions allocable to the Class AR Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of adjustable rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties properties. Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc.Securities Corp., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Sellers, the Servicers, the Trustee or the Trustee Trust Administrator referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Credit Suisse First Boston Corporation, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities DLJ Mortgage Capital, Inc., as transferor a seller (the in such capacity, a "TransferorSeller"), Wells Fargo Bank Minnesota, N.A.Washington Mutual Mortgage Securities Corp., as master a seller (in such capacity, a "Seller") and a servicer (the in such capacity, a "Servicer"), xxx Xachovia BankBank One, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on , The Chase Manhattan Bank, as trust administrator (the Mortgage Loans "Trust Administrator") and Calmco Servicing L.P., as a special servicer (in Loan Group 1 pursuant to the terms of the Agreementsuch capacity, a "Special Servicer"). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class AR Certificate at the Corporate Trust Office or the office or agency maintained by the Trust Administrator in New York, New York. No transfer of a Class AR Certificate shall be made unless the Trust Administrator shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trust Administrator, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Trust Administrator or the Trust Fund or (ii) if the transferee is an insurance company, a representation that the transferee is an insurance company which is purchasing this certificate with funds contained in an "insurance company general account," as that term is defined in Section V(e) of Prohibited Transaction Class Exemption 95-60, or PTCE 95-60, and that the purchase and holding of this certificate are covered under Sections I and II of PTCE 95-60, or (iii) in the case of any such Class AR Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or Section 4975 of the Code (or comparable provisions of any subsequent enactments), or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement, or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trust Administrator to the effect that the purchase or holding of such Class AR Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Depositor, the Trustee, the Trust Administrator, the Servicers or the Special Servicer to any obligation in addition to those undertaken in this Agreement, which Opinion of Counsel shall not be an expense of the Trustee, the Trust Administrator or the Trust Fund. Notwithstanding anything else to the contrary herein, any purported transfer of a Class AR Certificate to or on behalf of an employee benefit plan subject to ERISA or to the Code without the Opinion of Counsel satisfactory to the Trust Administrator as described above shall be void and of no effect. Each Holder of this Class AR Certificate will be deemed to have agreed to be bound by the restrictions of the Agreement, including but not limited to the restrictions that (i) each person holding or acquiring any Ownership Interest in this Class AR Certificate must be a Permitted Transferee, (ii) no Ownership Interest in this Class AR Certificate may be transferred without delivery to the Trust Administrator of a transfer affidavit of the initial owner or the proposed transferee in the form described in the Agreement, (iii) each person holding or acquiring any Ownership Interest in this Class AR Certificate must agree to require a transfer affidavit from any other person to whom such person attempts to Transfer its Ownership Interest in this Class AR Certificate as required pursuant to the Agreement, (iv) each person holding or acquiring an Ownership Interest in this Class AR Certificate must agree not to transfer an Ownership Interest in this Class AR Certificate if it has actual knowledge that the proposed transferee is not a Permitted Transferee and (v) any attempted or purported transfer of any Ownership Interest in this Class AR Certificate in violation of such restrictions will be absolutely null and void and will vest no rights in the purported transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 15-A-2-A-9-[__] Cut-off Date: October August 1, 2002 First Distribution Date: November September 25, 2002 Last Scheduled Distribution Date: November September 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 3,768,139 of this Class: CUSIP: 55265K MA 4 HN 2 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 5 Mortgage Pass-Through Certificates, Series 2002-7 5 Class 15-A-2 A-9 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 5 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 15-A-2-A-6-[__] Cut-off Date: October August 1, 2002 First Distribution Date: November September 25, 2002 Last Scheduled Distribution Date: November September 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 909,000 of this Class: CUSIP: 55265K MA 4 HK 8 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 5 Mortgage Pass-Through Certificates, Series 2002-7 5 Class 15-A-2 A-6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 5 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[Percentage Interest: __] Cut___% ----------------------- 1 To be inserted in the Certificate to be held by the Holder of the Special Interest. CERTIFICATE OF AUTHENTICATION This is one of the Subordinated Certificates referred to in the within-off Datementioned Trust Agreement. Date of Authentication: October 1WILMINGTON TRUST COMPANY, 2002 First Distribution Dateas Certificate Registrar December ___, 2001 By: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that ______________________ Authorized Officer THIS CERTIFIES THAT _____________, is the registered owner of the above specified Percentage Interest evidenced by this Certificate in certain monthly distributions with respect THE NELNET GROUP TRUST II (the "Trust"). The Trust was created pursuant to a Trust Fund consisting primarily Agreement dated as of December 1, 2001 (the Mortgage Loans deposited by Mortgage Asset Securitization Transactions"Trust Agreement"), Inc. among EMT Corp., as depositor (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated , NELnet, Inc., as of the Cut-off Date specified above administrator (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "TransferorAdministrator"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationWilmington Trust Company, as trustee (the "Trustee"). Distributions on this , Certificate will be made primarily from collections on Paying Agent and Certificate Registrar, and the Mortgage Loans in Loan Group 1 pursuant to the terms JPMorgan Chase Bank as Collateral Agent, Note Registrar and Note Paying Agent, a summary of certain of the Agreementpertinent provisions of which is set forth below. To the extent not otherwise defined herein, the capitalized terms used herein have the meanings assigned to them in the Trust Agreement. This certificate is one of the duly authorized certificates designated in the Trust Agreement as Subordinated Certificates (the "Subordinated Certificates"). The Trust is also issuing _____% Student Loan Interest Margin Securities (the "Notes"). This Subordinated Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, Trust Agreement which is incorporated herein by reference and to which Agreement the Holder of this Subordinated Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made Distributions with respect to the further provisions Subordinated Certificates will be made, but only after payment in full of the current principal and interest payment on the Notes, solely from the assets of the Trust, which include (as more fully described in the Trust Agreement): (i) the right to receive the residual cash-flow (the "Underlying Residual Rights") from a master trust estate established under underlying Trust Agreements, (ii) the Depositor's right to receive certain Adjusted Program Expenses, and (iii) the Collection Account, the Reserve Account and the Distribution Account established under the Trust Agreement (collectively, the "Trust Property"). Distributions will be made with respect to the Subordinated Certificates only to the extent set forth in the Trust Agreement, semi-annually, on the second Business Day of each March and September, commencing September, 2002 (the "Payment Date") to the person in whose name this Subordinated Certificate is registered at the close of business on the second day immediately preceding such Payment Date (the "Record Date"). It is the intent and agreement of the Depositor, the Subordinated Certificateholders and the Noteholders that, for purposes of federal income, state and local income and franchise and any other income taxes, the Trust will be treated as a grantor trust or, if not, as a partnership with the Subordinated Certificateholders being treated as partners in that partnership, and the Notes will be treated as debt of the Trust. The Holder of this Certificate set forth on Subordinated Certificate, by virtue of the reverse acceptance hereof, which further provisions shall agrees to treat, and to take no action inconsistent with the treatment of, the Subordinated Certificates for all such tax purposes have as partnership interests in the same effect as if set forth at Trust. Distributions on this place. This Subordinated Certificate shall not will be entitled made by the Certificate Paying Agent by check or money order mailed to the Subordinated Certificateholder of record in the Certificate Register without the presentation or surrender of this Subordinated Certificate or the making of any benefit under notation hereon or by wire transfer, in immediately available funds, to the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory account of the Trustee.Subordinated Certificateholder if the Subordinated Certificateholder shall have provided to the Certificate Paying Agent appropriate written instructions at least five Business Days prior to

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November 25September 27, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2004 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial ) : $ 8,817,000.00 Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$ 8,817,000.00 Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage 100.00% Pass-Through Rate : Variable CUSIP : 317350 BM 7 Class : M-9 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-2 Asset-Backed Certificates, Series 20022004-7 2 Class 1-A-2 M-9 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-above- referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class M-9 Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class M-9 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class M-9 Certificate (obtained by dividing the Denomination of this Class M-9 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Financial Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above August 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.HomEq Servicing Corporation, as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bankand Deutsche Bank National Trust Company, National Associationa national banking association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class M-9 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class M-9 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. No transfer of this Certificate to a Plan subject to ERISA or Section 4975 of the Code, any Person acting, directly or indirectly, on behalf of any such Plan or any person using Plan Assets to acquire this Certificate shall be made except in accordance with Section 5.02(d) of the Agreement. Reference is hereby made to the further provisions of this Class M-9 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class M-9 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October January 1, 2002 2004 First Distribution DateDate : November February 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 [36228F ZT 6] ISIN : [US36228FZT64] GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 FM1 Mortgage Pass-Through Certificates, Series 20022004-7 FM1 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _______] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above January 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.HomEq Servicing Corporation, as master servicer (the "Servicer"), xxx Xachovia and Wells Fargo Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent xxx xxtent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate ) : 100% Principal Balances of all Certificates Balance : $8,333,333 of this Class100 CUSIP : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, N/A XXXXXX XXXXXXX ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002CDC Mortgage Capital Trust 2004-7 HE3 Mortgage Pass-Through Certificates, Series 20022004-7 HE3 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Unaffiliated Seller, any Originator, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ ____, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Xxxxxx Xxxxxxx ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Countrywide Home Loans Servicing LP, as master servicer (the "Servicer"), xxx Xachovia CDC Mortgage Capital Inc., as unaffiliated seller (the "Unaffiliated Seller"), Deutsche Bank National Trust Company, as custodian, and JPMorgan Chase Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes, or such other location specified in the notice to Certificateholders of such final distribution. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. Except as provided in the Agreement, no transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of this Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not a Plan, and is not acting on behalf of any Plan or using the assets of any Plan to effect such transfer. Any purported transfer of a Certificate of this Class in violation of the transfer restrictions set forth in the Agreement shall be void and of no effect. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. ***

Certificate No. 1-A-2-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, XXXXXX XXXXXXX ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002IXIS Real Estate Capital Trust 2006-7 HE1 Mortgage Pass-Through Certificates, Series 20022006-7 HE1 [Class 1-A-2 A-1] [Class A-2] [Class A-3] [Class A-4] [Class M-1] [Class M-2] [Class M-3] [Class M-4] [Class M-5] [Class M-6] [Class B-1] [Class B-2] [Class B-3] [Class B-4] evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Class. Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Unaffiliated Seller, the Securities Administrator, the Master Servicer, any Originator, the Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ CEDE & CO. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Xxxxxx Xxxxxxx ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank MinnesotaMaster Financial, N.A.Inc., as master a servicer ("Master Financial"), Saxon Mortgage Services Inc., as a servicer ("Saxon" and together with Master Financial, the "Servicers"), IXIS Real Estate Capital Inc., as unaffiliated seller (the "ServicerUnaffiliated Seller"), xxx Xachovia Deutsche Bank National Trust Company, as trustee and custodian (in each such capacity, respectively, the "Trustee" and the "Custodian") and JPMorgan Chase Bank, National Association, as trustee securities administrator, master servicer and backup servicer (in each such capacity, respectively, the "TrusteeSecurities Administrator", the "Master Servicer" and the "Backup Servicer"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.Securities Administrator. * * *

Certificate No. 1-A-2-[__] X-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 HE6 Mortgage PassXxxx-Through CertificatesXhxxxxx Xertificates, Series 20022004-7 HE6 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley Mortgage Capital Inc. is the registered owner of the Percentage Interest Perxxxxxxe Xxxxxxst evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chasx Xxxxaxxxx Xxrtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, HomEq Servicing Corporation, as servicer, Accredited Home Lenders, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicers, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Trustee or the Servicers to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. [1-A-2-[__] Cut-off Date: October December 1, 2002 2004 First Distribution Date: November January 25, 2002 2005 Last Scheduled Distribution Date: November August 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement [________]% [Initial Certificate Principal Balance of this Certificate ("Denomination"):] $[____________] ("Denomination"): [Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: :] $[____________] CUSIP: 55265K MA 4 [_____________] MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SEASONED SECURITIZATION TRUST 20022004-7 2 Mortgage Pass-Through Certificates, Series 20022004-7 2 Class 1-A-2 A-[___] evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools five classes of previously issued mortgage pass-through certificates representing a senior ownership interest in a pool of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties (the "TRUST ASSETS") Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans Trust Assets are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ CEDE & CO. is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans Trust Assets deposited by Mortgage Asset Securitization Transactions, Inc. (the "DepositorDEPOSITOR"). The Trust Fund was created pursuant to a Pooling and Servicing Trust Agreement dated as of the Cut-off Date specified above (the "AgreementAGREEMENT") among between the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Depositor and Xxxxx Fargo Bank MinnesotaBank, N.A., as master servicer trustee (in such capacity, the "ServicerTRUSTEE"), xxx Xachovia Bank, National Association, ) and as trustee (the "Trustee")securities intermediary. Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 Trust Assets pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 13-A-2-A-1-[__] Cut-off Date: October August 1, 2002 First Distribution Date: November September 25, 2002 Last Scheduled Distribution Date: November September 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 233,970,000 of this Class: CUSIP: 55265K MA 4 GY 9 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 5 Mortgage Pass-Through Certificates, Series 2002-7 5 Class 13-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 3 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 15-A-2-A-5-[__] Cut-off Date: October August 1, 2002 First Distribution Date: November September 25, 2002 Last Scheduled Distribution Date: November September 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 6,306,000 of this Class: CUSIP: 55265K MA 4 HJ 1 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 5 Mortgage Pass-Through Certificates, Series 2002-7 5 Class 15-A-2 A-5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 5 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. I A-__ Date of Pooling and Servicing Agreement : May 1-A-2-[__] , 2000 Cut-off DateOff Date : October 1April 30, 2002 2000 First Distribution DateDate : November 25June 20, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2000 Initial Certificate Principal Balance of this Certificate ("Denomination") : $[______] ("Denomination"): _________ Initial Certificate Principal Balances Balance of all Class I A Certificates : $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage 337,652,000 Pass-Through Certificates, Rate : The lesser of (a) 8.45% per annum or (b) the related Net Funds Cap Month of Last Scheduled Distribution Date : June 2031 CUSIP : 000000XX0 Exhibit B-1-1 GreenPoint Credit Manufactured Housing Contract Trust Pass-Through Certificates Series 20022000-7 Class 1-A-2 3 evidencing a percentage interest in the any distributions allocable to the Class I A Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans manufactured housing contracts (the "Mortgage LoansContracts") secured formed and sold by first liens on one- to four-family residential properties Mortgage Asset Securitization TransactionsGreenPoint Credit, Inc.LLC, (the "Contract Seller") which manufactured housing contracts were originated or acquired by the Contract Seller and are initially serviced by GreenPoint Credit, LLC, in its capacity as Depositor the Servicer (the "Servicer"). Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Neither this Certificate does not evidence an obligation of, nor the Contracts are insured or an interest in, and is not guaranteed by the DepositorContract Seller, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed Affiliates or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Class I A Certificates) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans Contracts deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor")Contract Seller. The Trust Fund was created pursuant to a Pooling and Servicing Agreement Agreement, dated as of the Cut-off Date specified above May 1, 2000 (the "Agreement") ), among the DepositorContract Seller, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Servicer and Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankOne, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Pursuant to the terms of the Agreement, a distribution will be made on the 20th day of each month or, if such 20th day is not a Business Day, the Business Day immediately following (the "Distribution Date"), commencing on the first Distribution Date specified above, to the Person in whose name this Certificate is registered at the close of business on the applicable Record Date in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the Class I A Distribution Amount on such Distribution Date pursuant to Section 5.02 of the Agreement. The Record Date applicable to each Distribution Date is the Business Day preceding such Distribution Date. Distributions to the Holder of this Class I A Certificate shall be applied first to interest and then to principal. Distributions on this Certificate shall be made by wire transfer of immediately available funds to the account of the Holder hereof at a bank or other entity having appropriate facilities therefor, if such Certificateholder shall have so notified the Trustee in writing at least five Business Days prior to the related Record Date and such Certificateholder shall hold Class I A Certificates evidencing a Percentage Interest aggregating 10% or more or, if not, by check mailed by first class mail to the address of such Certificateholder appearing in the Certificate Register. The final distribution on each Certificate will be made in like manner, but only upon presentment and surrender of such Certificate at the Corporate Trust Office or such other location specified in the notice to Certificateholders of such final distribution. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless the certificate of authentication hereon has been manually countersigned executed by an authorized signatory officer of the Trustee.. * * *

Certificate No. 1-A-2-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONSNo. OF WARRANTS --------------- --------------- WARRANTS EXERCISABLE FOR COMMON SHARES OF CHAMPION COMMUNICATION SERVICES, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through CertificatesEXERCISABLE BEFORE 5:00 p.m. (TORONTO TIME) ON MARCH 25, Series 2002-7 Class 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans 1998. COMMON SHARE PURCHASE WARRANTS TO PURCHASE COMMON SHARES OF CHAMPION COMMUNICATION SERVICES, INC. THIS IS TO CERTIFY THAT, for value received, (the "Mortgage Loansholder") secured by first liens on one- is entitled, subject to four-family residential properties Mortgage Asset Securitization Transactionsadjustment, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance to purchase for $5.00 per share at any time may be less than before 5:00 p.m. (Toronto time) on March 25, 1998 (the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, "Expiry Time") fully paid and is not guaranteed by non-assessable common shares ("Common Shares") in the Depositor, the Servicer or the Trustee referred to below or any capital of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization TransactionsChampion Communication Services, Inc. (the "DepositorCompany"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated ) as constituted on the date hereof, on the basis of one (1) Common Share for each of the Cut-off Date number specified above of whole Warrants, by surrendering to Equity Transfer Services Inc. (the "AgreementWarrant Agent") among at the Depositorprincipal office of its Transfer Department in Toronto, UBS Warburg Real Estate Securities Inc.Ontario, as transferor (the "Transferor")this Warrant certificate, Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned with a subscription in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate form set forth on the reverse hereofside hereof or such other form satisfactory to the Warrant Agent duly completed and executed, and a certified cheque, bank draft or money order in lawful money of Canada, payable to or to the order of the Warrant Agent, at par in Toronto, in an amount equal to the purchase price of the Common Shares so subscribed for. The Company has the right to accelerate conversion of the Warrants if the average price for the Common Shares of the Company is at least $5.50 for 10 consecutive trading days, upon 30 days prior notice of such conversion. The Warrants represented hereby shall be deemed to be so surrendered only upon receipt thereof by the Warrant Agent at the office specified above and shall be surrendered only by personal delivery, courier or prepaid registered mail. Subject to adjustment thereof in the events and in the manner set forth in the Warrant Indenture hereinafter referred to, the purchase price (the "Exercise Price") payable for each Common Share on exercise of any Warrants evidenced by this Warrant certificate will be $5.00 at any time before the Expiry Time in lawful money of Canada. Common Shares will not be issued pursuant to any Warrants if the issuance of such Common Shares would constitute a violation of the securities laws of any jurisdiction. Certificates representing the Common Shares subscribed for hereunder will be mailed to the person or persons specified in the subscription form at the address or respective addresses specified therein or, if so specified in the subscription form, delivered to such person or persons at the office where this Warrant certificate was surrendered. If fewer Common Shares are purchased than the number that may be subscribed for pursuant to the Warrants evidenced by this Warrant certificate, the holder will be entitled to receive, without charge, a new Warrant certificate in respect of the balance of such unexercised Warrants. To the extent that any Warrant evidenced hereby confers the right to purchase a fraction of a Common Share, such right may be exercised in respect of such fraction only in combination with another Warrant certificate or other Warrant certificates which further in the aggregate entitle the holder to be issued a whole number of Common Shares, and under no circumstances is the Company obligated to issue any fractional Common Share. In lieu of fractional shares, the Holder will receive a cash payment determined in accordance with the Warrant Indenture (as defined below). This Warrant certificate represents Warrants exercisable for Common Shares of the Company issued or issuable under the provisions shall of a Warrant Indenture (which Warrant Indenture together with all other instruments supplemental or ancillary thereto is herein referred to as the "Warrant Indenture") dated as of September 25, 1996 between the Company and the Warrant Agent, as warrant agent, to which Warrant Indenture reference is hereby made for particulars of the rights of the holders of the Warrants and of the Company and of the Warrant Agent in respect thereof and the terms and conditions upon which the Warrants are issued and held, all purposes have to the same effect as if the provisions of the Warrant Indenture were herein set forth forth, to all of which the holder of the Warrants represented hereby by acceptance hereof assents. Capitalized terms used herein and not otherwise defined herein shall have the respective meanings ascribed thereto in the Warrant Indenture, unless the context hereof otherwise requires. A copy of the Warrant Indenture will be available for inspection at the principal office of the Warrant Agent in the Municipality of Metropolitan Toronto upon the request of the holder. Upon presentation at the principal office of the Warrant Agent in the Municipality of Metropolitan Toronto, subject to the provisions of the Warrant Indenture and upon compliance with the reasonable requirements of the Warrant Agent, Warrant certificates of any denomination may be exchanged for Warrant certificates of any other denomination, any such exchange to be made for an equal aggregate number of Warrants. The Company and the Warrant Agent may deem and treat the registered holder of this placeWarrant Certificate as the absolute owner of the Warrants represented hereby for all purposes. The holding of this Warrant certificate shall not constitute the holder hereof a holder of Common Shares nor entitle such holder to any right or interest in respect thereof except as herein and in the Warrant Indenture expressly provided. The Warrants represented hereby may only be transferred, upon compliance with the conditions prescribed in the Warrant Indenture, on the registers to be kept at the offices of the Warrant Agent, by the registered Holder hereof or such holder's executors or administrators or other legal representatives, or the holder's attorney duly appointed by an instrument in writing in form and evidence satisfactory to the Warrant Agent acting reasonably, upon compliance with the requirements of all relevant stock exchanges and upon compliance with such reasonable requirements as the Warrant Agent and the Company may prescribe. In case this certificate shall become mutilated or be lost, stolen or destroyed, the Company shall issue, and thereupon the Warrant Agent shall certify and deliver, a new certificate upon surrender and cancellation of the mutilated certificate, or in the case of a lost, stolen or destroyed certificate, in lieu of and in substitution for the same, provided that the applicant for a substituted certificate shall furnish to the Company and to the Warrant Agent evidence of ownership and of the loss, theft or destruction as shall be satisfactory to them in their discretion, acting reasonably, and shall also furnish an indemnity satisfactory to them in their discretion, acting reasonably, and shall pay all reasonable expenses incidental to the issuance of such substituted certificate. The Warrant Indenture contains provisions making binding upon all holders of Warrants outstanding thereunder resolutions passed at meetings of such holders held in accordance with such provisions and instruments in writing signed by Warrantholders holding a specified percentage of the Warrants. The holding of this Warrant Certificate will not constitute the holder a shareholder of the Company or entitle the holder to any right or interest in respect thereof except as otherwise provided in the Warrant Indenture. The Warrants and the Warrant Indenture shall be governed by and construed in accordance with the laws of the Province of Ontario and the federal laws of Canada applicable therein and shall be treated in all respects as Ontario contracts. Time shall be of the essence hereof and of the Warrant Indenture. This Warrant Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose whatever unless manually countersigned and until it has been certified by an authorized signatory or on behalf of the TrusteeWarrant Agent for the time being under the Warrant Indenture.

Certificate No. 15-A-2-A-1-[__] Cut-off Date: October May 1, 2002 2004 First Distribution Date: November June 25, 2002 2004 Last Scheduled Distribution Date: November June 25, 2017 2019 Pass-Through Rate: Variable in accordance with the Agreement 4.75% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): $[ ] Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: $26,000,000 CUSIP: 55265K MA 4 576434 RK 2 ISIN: US576434RK28 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ALTERNATIVE LOAN TRUST 20022004-7 5 Mortgage Pass-Through Certificates, Series 20022004-7 Class 1-A-2 5 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A., as master servicer (in such capacity, the "ServicerServxxxx"), xxx Xachovia trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Association, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 1-A-2-[__] Cut-off DateDate : October December 1, 2002 First Distribution DateDate : November 25January 20, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2003 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 36228F LE4 ISIN: : US63228FLE42 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST GSAMP Trust 2002-7 HE2 Mortgage Pass-Through Certificates, Series 2002-7 HE2 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above December 1, 2002 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Litton Loan Servicing LP, as master servicer servicex (the xxx "Servicer"), xxx Xachovia Bank, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee or the Servicer to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] Cut-off DateDate : October 1, 2002 2004 First Distribution DateDate : November 2526, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 36242D JH 7 ISIN: : 36242DJH70 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAA Home Equity Trust 2004-7 Mortgage Pass9 Asset-Through Backed Certificates, Series 20022004-7 9 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers the Responsible Party, the Class A-1 Certificate Insurer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above October 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.NC Capital Corporation, as master servicer responsible party (the "ServicerResponsible Party"), xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, New Century Mortgage Corporation, as servicer (collectively, the "Servicers"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee, which Opinion of Counsel shall not be an expense of the Trustee, the Servicers or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Trustee or the Servicers to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. ***

Certificate No. 1-A-2-[__] P-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 HE6 Mortgage PassXxxx-Through Txxxxxx Certificates, Series 20022004-7 HE6 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley Mortgage Capital Inc. is the registered owner of the Percentage Interest Percxxxxxx Xxxxxxxt evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank MinnesotaChase, N.A.Xxxxtxxxxxx Home Loans Servicing LP, as master servicer (the "Servicer")servicer, xxx Xachovia BankHomEq Servicing Corporation, as servicer, Manhattan Mortgage Corporation, as servicer, Accredited Home Lenders, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes, or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] : 1 Cut-off DateDate : October With respect to any Mortgage Loan, June 1, 2002 2003 First Distribution DateDate : November July 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2003 Initial Certificate Principal Balance of this Certificate ("Denomination") : $[_______] ("Denomination"): Initial Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$[_______] Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage [____] Pass-Through Rate : Variable CUSIP : [____] Class : A Assumed Maturity Date : July, 2033 Long Beach Mortgage Loan Trust 2003-3 Asset-Backed Certificates, Series 20022003-7 3 Class 1-A-2 A evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien and second lien, fixed rate and adjustable rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.LONG BEACH SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class A Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class A Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Master Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class A Certificate (obtained by dividing the Denomination of this Class A Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. Long Beach Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above June 1, 2003 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A.Long Beach Mortgage Company, as master servicer (the "Master Servicer"), xxx Xachovia Bank, ) and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class A Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class A Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Class A Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class A Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1A-2-A-2-[__] 1 Cut-off Date: October December 1, 2002 2001 First Distribution Date: November January 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 6.50% Initial Certificate Principal Balance of this Certificate $[______] 34,171,000 ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 34,171,000 of this Class: CUSIP: 55265K MA 4 269243 AB 7 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION E*TRADE BANK MORTGAGE-BACKED SECURITIES TRUST 20022001-7 2 Mortgage Pass-Through Certificates, Series 20022001-7 2 Class 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the Denomination of this Certificate by the aggregate initial Class Principal Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaXxxxxsota, N.A., as master servicer (the "Servicer"), xxx Xachovia and JPMorgan Chase Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. II A-1-__ Date of Pooling and Servicing Agreement : May 1-A-2-[__] , 2000 Cut-off DateOff Date : October 1April 30, 2002 2000 First Distribution DateDate : November 25June 20, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2000 Initial Certificate Principal Balance of this Certificate $[______] _____ this Certificate ("Denomination"): ) : Initial Certificate Principal Balances Balance of all Class II A-1 Certificates : $8,333,333 155,656,917 Pass-Through Rate : The lesser of this Class(a) LIBOR plus 0.27%, per annum or (b) the related Net Funds Cap Month of Last Scheduled Distribution Date : CUSIPDecember 2021 CUSIP : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002000000XX0 Exhibit B-6-7 Mortgage 1 GreenPoint Credit Manufactured Housing Contract Trust Pass-Through Certificates, Series 20022000-7 Class 1-A-2 3 evidencing a percentage interest in the any distributions allocable to the Class II A-1 Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans manufactured housing contracts (the "Mortgage LoansContracts") secured formed and sold by first liens on one- to four-family residential properties Mortgage Asset Securitization TransactionsGreenPoint Credit, Inc.LLC (the "Contract Seller") which manufactured housing contracts were originated or acquired by Contract Seller, as Depositor and are initially serviced by GreenPoint Credit, LLC (the "Servicer"). Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Neither this Certificate does not evidence an obligation of, nor the Contracts are insured or an interest in, and is not guaranteed by the DepositorContract Seller, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed Affiliates or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Class II A-1 Certificates) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans Contracts deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor")Contract Seller. The Trust Fund was created pursuant to a Pooling and Servicing Agreement Agreement, dated as of the Cut-off Date specified above May 1, 2000 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo between the Contract Seller, the Servicer and Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankOne, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Pursuant to the terms of the Agreement, a distribution will be made on the 20th day of each month or, if such 20th day is not a Business Day, the Business Day immediately following (the "Distribution Date"), commencing on the first Distribution Date specified above, to the Person in whose name this Certificate is registered at the close of business on the applicable Record Date in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the Class II A-1 Distribution Amount on such Distribution Date pursuant to Section 5.02 of the Agreement. The Record Date applicable to each Distribution Date is the close of business on the day preceding such Distribution Date. Distributions to the Holder of this Class II A-1 Certificate shall be applied first to interest and then to principal. Distributions on this Certificate shall be made by wire transfer of immediately available funds to the account of the Holder hereof at a bank or other entity having appropriate facilities therefor, if such Certificateholder shall have so notified the Trustee in writing at least five Business Days prior to the related Record Date and such Certificateholder shall hold Class II A-1 Certificates evidencing a Percentage Interest aggregating 10% or more or, if not, by check mailed by first class mail to the address of such Certificateholder appearing in the Certificate Register. The final distribution on each Certificate will be made in like manner, but only upon presentment and surrender of such Certificate at the Corporate Trust Office or such other location specified in the notice to Certificateholders of such final distribution. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless the certificate of authentication hereon has been manually countersigned executed by an authorized signatory officer of the Trustee.. * * *

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of 100% this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, ) MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 HE6 Mortgage PassXxxx-Through CertificatesXhxxxxx Xertificates, Series 20022004-7 HE6 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley & Co. Incorporated is the registered owner of the Percentage Interest evidenced by this Certificate in certain Percenxxxx Xnxxxxxx specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chasx Xxxxaxxxx Xxrtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, HomEq Servicing Corporation, as servicer, Accredited Home Lenders, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicers or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] SC-1 Cut-off DateDate : October June 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass2007 BCAP LLC Securitized Asset Backed Receivables LLC Trust 2007-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 BR5 Mortgage Pass-Through Certificates, Series 20022007-7 Class 1-A-2 BR5 Servicing Fee Certificate evidencing a percentage the undivided 100% interest in the distributions allocable servicing fee payable pursuant to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans Agreement (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal defined below). Distributions in respect of this Servicing Fee Certificate is are distributable monthly according to the provisions in Section 3.11 of the Agreement and are subject to the Servicer's obligation to pay Compensating Interest as set forth herein. AccordinglyFor the avoidance of doubt, no distributions will be paid through this certificate, but rather shall be distributed in accordance with Section 3.11 of the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth hereinAgreement. This Servicing Fee Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Depositor or the Trustee referred to below or any of their respective affiliates. Neither this Servicing Fee Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Barclays Capital Real Estate Inc. d/b/a HomEq Servicing, as servicer (the "Servicer"), is the registered owner of the Percentage Interest interest evidenced by this Certificate Servicing Fee Certificate, which interest is the entire interest in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Servicing Fee payable pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above June 1, 2007 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.BCAP LLC, as transferor depositor (the "TransferorDepositor"), Wells Fargo the Servicer, and Deutsche Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Servicing Fee Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Servicing Fee Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Servicing Fee Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Servicing Fee Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee., except that the Servicer shall be entitled to the Servicing Fee whether or not this Servicing Fee Certificate has been executed, authenticated or delivered to the Servicer. * * *

Certificate No. 1-A-2-A-1-[__] Cut-off Date: October April 1, 2002 2004 First Distribution Date: November May 25, 2002 2004 Last Scheduled Distribution Date: November May 25, 2017 2034 Pass-Through Rate: Variable in accordance with the Agreement 5.50% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): $[ ] Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: $63,374,000 CUSIP: 55265K MA 4 576434 PX 6 ISIN: US576434PX66 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ALTERNATIVE LOAN TRUST 20022004-7 4 Mortgage Pass-Through Certificates, Series 20022004-7 Class 1-A-2 4 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A., as master servicer (in such capacity, the "ServicerServxxxx"), xxx Xachovia trust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Association, as a custodian ("U.S. Bank"), and Wachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 13-A-2-A-1-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 5.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 67,168,000 of this Class: CUSIP: 55265K MA 4 MV 8 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 3 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 15-A-2-A-11-[__] Cut-off Date: October August 1, 2002 First Distribution Date: November September 25, 2002 Last Scheduled Distribution Date: November September 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 15,781,250 of this Class: CUSIP: 55265K MA 4 HQ 5 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 5 Mortgage Pass-Through Certificates, Series 2002-7 5 Class 15-A-2 A-11 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 5 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 17-A-2-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 67,866,000 of this Class: CUSIP: 55265K MA 4 KS 7 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 14-A-2-A-6-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 11,533,000 of this Class: CUSIP: 55265K MA 4 KJ 7 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 4 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October December 1, 2002 2004 First Distribution DateDate : November January 25, 2002 Last Scheduled Distribution Date2005 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) 100% CUSIP : CUSIP36242D SN 4 ISIN : 55265K MA 4 US36242DSN48 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 OPT Mortgage Pass-Through Certificates, Series 20022004-7 OPT Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _______] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above December 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Option One Mortgage Corporation, a California corporation, as servicer (in such capacity, the "Servicer") and responsible party (in such capacity, the "Responsible Party"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as custodian, and Deutsche Bank Xxxxonal Trust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] : 1 Cut-off DateDate : October With respect to any Mortgage Loan, May 1, 2002 2004 First Distribution DateDate : November June 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2004 Initial Certificate Principal Balance of this Certificate ("Denomination") : $[_______] ("Denomination"): Initial Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$[_______] Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage [____] Pass-Through Rate : Variable CUSIP : [____] Class : A-1 Assumed Maturity Date : June, 2034 Long Beach Mortgage Loan Trust 2004-2 Asset-Backed Certificates, Series 20022004-7 2 Class 1-A-2 A-1 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien, fixed rate and adjustable rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.LONG BEACH SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class A-1 Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class A-1 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Master Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class A-1 Certificate (obtained by dividing the Denomination of this Class A-1 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. Long Beach Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above May 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A.Long Beach Mortgage Company, as master servicer (the "Master Servicer"), xxx Xachovia Bank, ) and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class A-1 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class A-1 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Class A-1 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class A-1 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October 1, 2002 2003 First Distribution DateDate : November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2003 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 36228F YW 0 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2003-7 SEA2 Mortgage Pass-Through Certificates, Series 2002-7 2003 SEA2 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Depositor or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect pursuant to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate between GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia and JPMorgan Chase Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Trust Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee, which Opinion of Counsel shall not be an expense of the Trustee or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : September 1, 2004 First Distribution Date : October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 ISIN : GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAA Home Equity Trust 2004-7 Mortgage Pass8 Asset-Through Backed Certificates, Series 20022004-7 8 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the DepositorDepositor the Master Servicer, the Servicer Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _______] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling Master Servicing and Servicing Trust Agreement dated as of the Cut-off Off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Deutsche Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on ) and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the Mortgage Loans "Mastxx Xxrvicer") and securities administrator (in Loan Group 1 pursuant to such capacity, the terms of the Agreement"Securities Administrator) and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.Securities Administrator. * * *

Certificate No. 1-A-2-[__] Cut-off DateDate : October December 1, 2002 2001 First Distribution DateDate : November January 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): ) : Initial Certificate Principal Balances of all Certificates $8,333,333 of this ClassClass : CUSIPPercentage Interest : 55265K MA 4 CUSIP : Pass-Through Rate : None Maturity Date : CREDIT SUISSE FIRST BOSTON MORTGAGE ASSET SECURITIZATION TRANSACTIONSSECURITIES CORP. Credit Suisse First Boston Mortgage Securities Corp., INC. MASTR ASSET SECURITIZATION TRUST 2002Mortgage-7 Mortgage Backed Pass-Through Certificates, Series 20022001-7 33 Class 1A-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of fixed rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties properties. Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc.Securities Corp., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Sellers, the Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ CEDE & CO, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities DLJ Mortgage Capital, Inc., as transferor a seller (the in such capacity, a "TransferorSeller"), Wells Fargo Bank Minnesota, N.A.Washington Mutual Mortgage Securities Corp., as master a seller (in such capacity, a "Seller") and a servicer (the in such capacity, a "Servicer"), xxx Xachovia Firstar Bank, National Association, as a seller (a "Seller"), GreenPoint Mortgage Funding, Inc., as a seller (a "Seller") and a servicer (in such capacity, a "Servicer"), Bank One, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans , RBMG, Inc., as a servicer (a "Servicer") and Olympus Servicing L.P., as a servicer (in Loan Group 1 pursuant to the terms of the Agreementsuch capacity, a "Servicer") and as a special servicer (in such capacity, a "Special Servicer"). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : September 1, 2004 First : October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled 2004 Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance Date Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 ISIN : GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAA Home Equity Trust 2004-7 Mortgage Pass8 Asset-Through Backed Certificates, Series 20022004-7 8 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the DepositorDepositor the Master Servicer, the Servicer Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _______] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling Master Servicing and Servicing Trust Agreement dated as of the Cut-off Off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Deutsche Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on ) and custodian, Wells Fargo Bank, N.A., as Master Servicer (in such capacity, the Mortgage Loans "Mastxx Xxrvicer") and securities administrator (in Loan Group 1 pursuant to such capacity, the terms of the Agreement"Securities Administrator) and JPMorgan Chase Bank, as custodian. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Securities Administrator in New York, New York. No transfer of a Class R Certificate shall be made unless the Securities Administrator shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Securities Administrator or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Securities Administrator of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Securities Administrator shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Securities Administrator under Section 5.02(b) of the Agreement, the Securities Administrator shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the TrusteeSecurities Administrator.

Certificate No. 17-A-2-A-10-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 1,979,000 of this Class: CUSIP: 55265K MA 4 LA 5 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 14-A-2-A-1-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 20,000,000 of this Class: CUSIP: 55265K MA 4 KD 0 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 4 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] X-1 Cut-off DateDate : October 1, 2002 2004 First Distribution DateDate : November 2526, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Capxxxx X Xxx. Xxust 2004-7 HE8 Mortgage PassXxxx-Through Txxxxxx Certificates, Series 20022004-7 HE8 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley Mortgage Capital Inc., is the registered owner of the Percentage Interest Perxxxxxxe Xxxxxxst evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chase Xxxxxtxxx Xxxtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, New Century Mortgage Corporation, as servicer, Aames Capital Corporation, as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicers, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Depositor, the Trustee or the Servicers to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. ***

Certificate No. 1-A-2-[__] Cut-off DateDate : October January 1, 2002 2005 First Distribution DateDate : November February 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2005 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP1% CUSIP : 55265K MA 4 36242D TY 9 ISIN: : US36242DTY93 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION GSAA HOME EQUITY TRUST 20022005-7 Mortgage Pass2 Asset-Through Backed Certificates, Series 20022005-7 2 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above January 1, 2005 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.NC Capital Corporation, as master servicer responsible party (the "ServicerResponsible Party"), xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, New Century Mortgage Corporation, as servicer (collectively, the "Servicers"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee, which Opinion of Counsel shall not be an expense of the Trustee, the Servicers or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Trustee or the Servicers to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1A-A-2-[__] R-1 Cut-off Date: October December 1, 2002 2001 First Distribution Date: November January 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 6.50% Initial Certificate Principal Balance of this Certificate $[______] 100 ("Denomination"): Initial Certificate Principal Balances of all Certificates of $8,333,333 of 100 this Class: CUSIP: 55265K MA 4 269243 AE 1 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION E*TRADE BANK MORTGAGE-BACKED SECURITIES TRUST 20022001-7 2 Mortgage Pass-Through Certificates, Series 20022001-7 Class 1-A-2 2 evidencing a percentage interest in the distributions allocable to the Class A-R Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced (obtained by dividing the Denomination of this Certificate by the aggregate initial Class Principal Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaXxxxxsota, N.A., as master servicer (the "Servicer"), xxx Xachovia and JPMorgan Chase Bank, National Association., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class A-R Certificate at the Corporate Trust Office of the Trustee. No transfer of a Class A-R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or Similar Law, nor a person acting on behalf of any such plan, which representation letter shall not be an expense of the Trustee or the Servicer. Notwithstanding anything else to the contrary herein any purported transfer of a Class A-R Certificate to or on behalf of an employee benefit plan subject to ERISA, the Code or Similar Law shall be void and of no effect. Each Holder of this Class A-R Certificate will be deemed to have agreed to be bound by the restrictions of the Agreement, including but not limited to the restrictions that (i) each person holding or acquiring any Ownership Interest in this Class A-R Certificate must be a Permitted Transferee, (ii) no Ownership Interest in this Class A-R Certificate may be transferred without delivery to the Trustee of (a) a transfer affidavit of the proposed transferee and (b) a transfer certificate of the transferor, each of such documents to be in the form described in the Agreement, (iii) each person holding or acquiring any Ownership Interest in this Class A-R Certificate must agree to require a transfer affidavit and to deliver a transfer certificate to the Trustee as required pursuant to the Agreement, (iv) each person holding or acquiring an Ownership Interest in this Class A-R Certificate must agree not to transfer an Ownership Interest in this Class A-R Certificate if it has actual knowledge that the proposed transferee is not a Permitted Transferee and (v) any attempted or purported transfer of any Ownership Interest in this Class A-R Certificate in violation of such restrictions will be absolutely null and void and will vest no rights in the purported transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 15-A-2-A-10-[__] Cut-off Date: October August 1, 2002 First Distribution Date: November September 25, 2002 Last Scheduled Distribution Date: November September 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[__________] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 2,153,222 of this Class: CUSIP: 55265K MA 4 HP 7 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 5 Mortgage Pass-Through Certificates, Series 2002-7 5 Class 15-A-2 A-10 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three five pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 5 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 13-A-2-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 5.500% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 10,000,000 of this Class: CUSIP: 55265K MA 4 MW 6 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 13-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 3 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October December 1, 2002 2001 First Distribution DateDate : November January 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance Percentage Interest of this Certificate $[______] ("DenominationDENOMINATION"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% -------------- CUSIP : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, XXXXXX XXXXXXX XXXX XXXXXX CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Xxxxxx Xxxxxxx Xxxx Xxxxxx Capital I Inc. Trust 2001-7 NC4 Mortgage Pass-Through Certificates, Series 20022001-7 NC4 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ U.S. Bank National Association, as Indenture Trustee, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "AgreementAGREEMENT") among the Depositor, UBS Warburg Real Estate Securities Xxxxxx Xxxxxxx Xxxx Xxxxxx Capital I Inc., as transferor depositor (the "TransferorDEPOSITOR"), Wells Fargo Ocwen Federal Bank Minnesota, N.A.FSB, as master servicer (the "ServicerSERVICER"), xxx Xachovia BankNC Capital Corporation, as responsible party (the "RESPONSIBLE PARTY") and U.S. Bank National Association, as trustee (the "TrusteeTRUSTEE"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 ACT"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. Except with respect to the transfer of this Certificate to the NIMs Trust on the Closing Date, no transfer of this Certificate shall be made unless the Trustee shall have received either (i) a representation letter from the transferee, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is neither an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan subject to Section 4975 of the Code or a plan subject to any Federal, state or local law materially similar to the foregoing provisions of ERISA or the Code ("SIMILAR LAW"), nor a person acting on behalf of any such plan or using the assets of any such plan or to effect such transfer, (ii) if this Certificate has been the subject of an ERISA-Qualifying Underwriting (as such term is defined in the Agreement), a representation letter from the transferee, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is an insurance company and is acquiring this Certificate with funds contained in an "insurance company general account" (as such term is defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE 95-60") and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60 or (iii) if this Certificate is presented for registration in the name of an employee benefit plan subject to Title I of ERISA, a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of or using the assets of any such plan, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of this Certificate will not result in the assets of the Trust Fund being deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code or similar provisions of Similar Law and will not subject the Trustee or the Servicer to any obligation in addition to those expressly undertaken in the Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.. * * * WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed. Dated:

Certificate No. 12-A-2-A-15-[__] Cut-off Date: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November December 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 1,000,000 of this Class: CUSIP: 55265K MA 4 MU 0 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 2 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 13-A-2-A-1-[__] Cut-off DateDate of Pooling and Servicing Agreement: October As of November 1, 2002 2004 First Distribution Date: November 25December 21, 2002 2004 Last Scheduled Distribution Date: November 2521, 2017 2034 Pass-Through Rate: Variable Floating in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[_______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: $314,447,000 CUSIP: 55265K MA 4 576433 UF1 ISIN: US576433UF13 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ADJUSTABLE RATE MORTGAGES TRUST 20022004-7 13 Mortgage Pass-Through Certificates, Series 20022004-7 Class 1-A-2 13 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Master Servicer, the Trust Administrator, the Trustee or the Trustee custodian referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A.National Association, as master servicer (in such capxxxxx, the "Master Servicer"), xxx Xachovia Banktrust administrator (in such capacity, the "Trust Administrator") and custodian, and Wachovia Bank National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 12-A-2-[__] A-1 Cut-off Date: October June 1, 2002 2001 First Distribution Date: November July 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2001 Initial Principal Balance of this Certificate ("Denomination"): $93,995,000 Initial Certificate Principal Balance of this Certificate Class 2-A Certificates: $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class93,995,000 Latest Possible Maturity Date: October 25, 2034 CUSIP: 55265K MA 4 MORTGAGE 07384Y AC 0 Interest Rate: Adjustable (the lesser of (i) One-Month LIBOR plus, for any Distribution Date (a) on or prior to the Optional Termination Date, 0.320% and (b) thereafter, 0.640% and (ii) the Class 2-A Rate Cap). BEAR STEARNS ASSET SECURITIZATION TRANSACTIONSBACKED SECURITIES TRUST 2001-2 XXXXX-XACKED CERTIFICATES, INC. MASTR ASSET SECURITIZATION TRUST 2002SERIES 2001-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 2 evidencing a percentage interest in the distributions allocable to the Class 2-A Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional conventional, fixed-rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor well as certain BSSP Certificates (the "Trust Assets"). Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of the Class 2-A Certificates at any time may be less than the Initial Certificate Principal Balance of the Class 2-A Certificates as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Seller, either Master Servicer, the Securities Administrator or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor most of the Mortgage Loans Trust Assets are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Class 2-A Certificates) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans Trust Assets deposited by Mortgage Bear Stearns Asset Securitization TransactionsBacked Securities, Inc. (the "Depositor"). The Trust Fund Trusx Xxxx was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above June 29, 2001 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.EMC Mortgage Corporation as seller and master servicer (in its capacity as seller, as transferor (the "TransferorSeller" and in its capacity as master servicer, the "EMC Master Servicer"), Wells Fargo Bank Minnesota, N.A.National Association, as master servicer servixxx xnd securities administrator (in its capacity as master servicer, the "Wells Master Servicer" and in its capacity as securities administxxxxx, the ")Securities Administrator") and Bankers Trust Company of California, xxx Xachovia Bank, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on The EMC Master Servicer and the Mortgage Loans in Loan Group 1 pursuant Wells Master Servicer are together referred to as the terms of the Agreement. "Master Serxxxxxs" and individually sometimes referred to as a "Master Servicer." To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Pursuant to the terms of the Agreement, a distribution will be made on the 25th day of each month or, if such 25th day is not a Business Day, the Business Day immediately following (the "Distribution Date"), commencing on the first Distribution Date specified above, to the Person in whose name this Certificate is registered on the applicable Record Date in an amount equal to the product of the Percentage Interest evidenced by this Certificate and the amount required to be distributed to Holders of Class 2-A Certificates on such Distribution Date pursuant to Section 5.04 of the Agreement. Distributions on this Certificate shall be made by wire transfer of immediately available funds to the account of the registered Holder hereof at a bank or other entity having appropriate facilities therefor, if such Certificateholder shall have so notified the Securities Administrator in writing at least five Business Days prior to the related Record Date and such Certificateholder shall hold a Percentage Interest aggregating 10% or more of a Class of Regular Certificates or of Certificates with an aggregate Initial Certificate Principal Balance of $1,000,000 or more, or, if not, by check mailed by first class mail to the address of such Certificateholder appearing in the Certificate Register. The final distribution on each Certificate will be made in like manner, but only upon presentment and surrender of such Certificate at the Corporate Trust Office of the Trustee or such other location specified in the notice to Certificateholders of such final distribution. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless the certificate of authentication hereon has been manually countersigned executed by an authorized signatory officer of the Trustee.. * * *

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : October April 1, 2002 2004 First Distribution DateDate : November May 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, ) 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Cxxxxxx X Xxx. Trust 2004-7 Mortgage PassNC3 Mortgagx Xxxx-Through Xxxxxxx Certificates, Series 20022004-7 NC3 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley & Co. Incorporated is the registered owner of the Percentage Interest evidenced by this Certificate in certain Percenxxxx Xnxxxxxx specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Counxxxxxxe Xxxx Xoans Servicing LP, as master servicer (the "Servicer"), xxx Xachovia BankNC Capital Corporation, as responsible party (the "Responsible Party"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] P-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE 100% SECURITIZED ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002BACKED RECEIVABLES LLC Securitized Asset Backed Receivables LLC Trust 2004-7 NC2 Mortgage Pass-Through Certificates, Series 20022004-7 NC2 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Responsible Party, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Deutsche Bank National Trust Company, as indenture trustee, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.Securitized Asset Backed Receivables LLC, as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Litton Loan Servicing LP, as master servicer (the "Servicer"), xxx Xachovia BankNC Capital Corpxxxxxxn, as responsible party (the "Responsible Party"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes, or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] P-1 Cut-off DateDate : October December 1, 2002 2004 First Distribution DateDate : November January 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2005 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Capxxxx X Xxx. Xxust 2004-7 WMC3 Mortgage PassXxxx-Through Txxxxxx Certificates, Series 20022004-7 WMC3 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Responsible Party, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _________________ is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Counxxxxxxe Xxxx Xoans Servicing LP, as master servicer (the "Servicer"), xxx Xachovia BankWMC Mortgage Corp., as responsible party (the "Responsible Party"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes, or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] Cut-off DateDate : October May 1, 2002 2004 First Distribution DateDate : November June 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) 100% CUSIP : CUSIPISIN : 55265K MA 4 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002FFMLT Trust 2004-7 FF3 Mortgage Pass-Through Certificates, Series 20022004-7 FF3 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above May 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chase Manhattan Mortgage Corporation, as master servicer (the "Servicer"), xxx Xachovia Bank, ) and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is not a Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 17-A-2-A-1-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 4.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 67,866,000 of this Class: CUSIP: 55265K MA 4 KR 9 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October May 1, 2002 2001 First Distribution DateDate : November June 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2001 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): ) : Initial Certificate Principal Balances of all Certificates $8,333,333 of this ClassClass : CUSIPCUSIP : 55265K MA 4 Pass-Through Rate : Maturity Date : CREDIT SUISSE FIRST BOSTON MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002CSFB ABS Trust Series 2001-7 HE12 CSFB Mortgage Pass-Through Certificates, Series 20022001-7 HE12 Class 1-A-2 A-[o] evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of fixed rate and adjustable rate conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties properties. Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc.Securities Corp., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Seller, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ CEDE & CO. is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Credit Suisse First Boston Mortgage Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities DLJ Mortgage Capital, Inc., as transferor seller (the in such capacity, "TransferorSeller"), Wells Fargo Bank Minnesota, N.A.Calmco Servicing L.P., as master servicer (the in such capacity, "Servicer"), xxx Xachovia Bank, ) and U.S. Bank National Association, Association as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1R-1-A-2-[__] 1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE 100% SECURITIZED ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002BACKED RECEIVABLES LLC Securitized Asset Backed Receivables LLC Trust 2004-7 NC2 Mortgage Pass-Through Certificates, Series 20022004-7 NC2 Class 1-A-2 R-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that ____________________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.Securitized Asset Backed Receivables LLC, as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Litton Loan Servicing LP, as master servicer (the "Servicer"), xxx Xachovia BankNC Capital Corpxxxxxxn, as responsible party (the "Responsible Party"), and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R-1 Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Class R-1 Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicer or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R-1 Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R-1 Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R-1 Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R-1 Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R-1 Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R-1 Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R-1 Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R-1 Certificate, (C) not to cause income with respect to the Class R-1 Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R-1 Certificate or to cause the Transfer of the Ownership Interest in this Class R-1 Certificate to any other Person if it has actual knowledge that such Person is a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R-1 Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 17-A-2-A-13-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 28,000,000 of this Class: CUSIP: 55265K MA 4 LD 9 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October 1, 2002 First Distribution DateDate : November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): ) : $ Initial Certificate Principal Balances of all Certificates $8,333,333 of this ClassClass : CUSIP$ CUSIP : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONSCWMBS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 199_ Class 1-A-2 ( ) evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization TransactionsCWMBS, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Seller, the Master Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered regis- -------------------------------- tered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate Initial Certificate Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization TransactionsCWMBS, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Countrywide Home Loans, Inc., as transferor seller (in such capacity, the "TransferorSeller"), Wells Fargo Bank Minnesota, N.A., ) and as master servicer (in such capacity, the "Master Servicer"), xxx Xachovia Bank, National Associationand The Bank of New York, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee. * * * IN WITNESS WHEREOF, the Trustee has caused this Certificate to be duly executed. Dated: ____________, 19__ THE BANK OF NEW YORK, as Trustee By ______________________ Countersigned: By ___________________________ Authorized Signatory of THE BANK OF NEW YORK, as Trustee EXHIBIT B (FORM OF SUBORDINATED CERTIFICATE) (UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.) SOLELY FOR U.S. FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE IS A "REGULAR INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT," AS THOSE TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"). THIS CERTIFICATE IS SUBORDINATED IN RIGHT OF PAYMENT TO CERTAIN CERTIFICATES AS DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN. (THE FOLLOWING INFORMATION IS PROVIDED SOLELY FOR THE PURPOSE OF APPLYING THE U.S. FEDERAL INCOME TAX ORIGINAL ISSUE DISCOUNT ("OID") RULES UNDER THE CODE TO THIS CERTIFICATE. THE ISSUE DATE OF THIS CERTIFICATE IS , 199 . THE INITIAL PER ANNUM RATE OF INTEREST ON THIS CERTIFICATE IS %. ASSUMING THAT THE MORTGAGE LOANS PREPAY AT AN ASSUMED RATE OF PREPAYMENT OF % PER ANNUM (THE "PREPAYMENT ASSUMPTION"), THIS CERTIFICATE HAS BEEN ISSUED WITH $ OF OID PER $1,000 OF THE ORIGINAL PRINCIPAL AMOUNT OF THIS CERTIFICATE; THE ANNUAL YIELD TO MATURITY OF THIS CERTIFICATE FOR PURPOSES OF COMPUTING THE ACCRUAL OF OID IS APPROXIMATELY % (COMPOUNDED MONTHLY); THE AMOUNT OF OID ALLOCABLE TO THE SHORT FIRST ACCRUAL PERIOD IS $ PER $1,000 OF THE ORIGINAL PRINCIPAL AMOUNT OF THIS CERTIFICATE COMPUTED USING THE MONTHLY YIELD AND DAILY COMPOUNDING DURING THE SHORT ACCRUAL PERIOD. NO REPRESENTATION IS MADE THAT THE MORTGAGE LOANS WILL PREPAY AT A RATE BASED ON THE PREPAYMENT ASSUMPTION OR AT ANY OTHER RATE. THE ACTUAL YIELD TO MATURITY MAY DIFFER FROM THAT SET FORTH ABOVE, AND THE ACCRUAL OF OID WILL BE ADJUSTED, IN ACCORDANCE WITH SECTION 1272(a)(6) OF THE CODE, TO TAKE INTO ACCOUNT EVENTS WHICH HAVE OCCURRED DURING ANY ACCRUAL PERIOD. THE PREPAYMENT ASSUMPTION IS INTENDED TO BE THE PREPAYMENT ASSUMPTION REFERRED TO IN SECTION 1272(a)(6)(B)(iii) OF THE CODE.) (THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE WITHOUT REGISTRATION THEREOF UNDER THE ACT MAY ONLY BE MADE IN A TRANSACTION EXEMPTED FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN.) NEITHER THIS CERTIFICATE NOR ANY INTEREST HEREIN MAY BE TRANSFERRED UNLESS THE TRANSFEREE REPRESENTS TO THE TRUSTEE THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN SUBJECT TO THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED, OR A PLAN SUBJECT TO SECTION 4975 OF THE CODE, OR DELIVERS TO THE TRUSTEE AN OPINION OF COUNSEL IN ACCORDANCE WITH THE PROVISIONS OF THE AGREEMENT REFERRED TO HEREIN. (SUCH REPRESENTATION SHALL BE DEEMED TO HAVE BEEN MADE TO THE TRUSTEE BY THE TRANSFEREE'S ACCEPTANCE OF A CERTIFICATE OF THIS CLASS AND BY A BENEFICIAL OWNER'S ACCEPTANCE OF ITS INTEREST IN A CERTIFICATE OF THIS CLASS.) NOTWITHSTANDING ANYTHING ELSE TO THE CONTRARY HEREIN, ANY PURPORTED TRANSFER OF THIS CERTIFICATE TO OR ON BEHALF OF AN EMPLOYEE BENEFIT PLAN SUBJECT TO ERISA OR TO THE CODE WITHOUT THE OPINION OF COUNSEL SATISFACTORY TO THE TRUSTEE AS DESCRIBED ABOVE SHALL BE VOID AND OF NO EFFECT. Certificate No. : Cut-off Date : First Distribution Date : Initial Certificate Balance of this Certificate ("Denomination") : $ Initial Certificate Balances of all Certificates of this Class : $ CWMBS, INC. Mortgage Pass-Through Certificates, Series 199 - - --- Class ( ) evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of a pool of conventional loans (the "Mortgage Loans") secured by first liens on one- to four- family residential properties CWMBS, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Balance at any time may be less than the Certificate Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Seller, the Master Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that is the regis- --------------------------------- tered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate Initial Certificate Balances of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by CWMBS, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, Countrywide Home Loans, Inc., as seller (in such capacity, the "Seller") and as master servicer (in such capacity, the "Master Servicer"), and The Bank of New York, as trustee (the "Trustee"). To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. (No transfer of a Certificate of this Class shall be made unless such transfer is made pursuant to an effective registration statement under the Securities Act and any applicable state securities laws or is exempt from the registration requirements under said Act and such laws. In the event that a transfer is to be made in reliance upon an exemption from the Securities Act and such laws, in order to assure compliance with the Securities Act and such laws, the Certificateholder desiring to effect such transfer and such Certificateholder's prospective transferee shall each certify to the Trustee in writing the facts surrounding the transfer. In the event that such a transfer is to be made within three years from the date of the initial issuance of Certificates pursuant hereto, there shall also be delivered (except in the case of a transfer pursuant to Rule 144A of the Securities Act) to the Trustee an Opinion of Counsel that such transfer may be made pursuant to an exemption from the Securities Act and such state securities laws, which Opinion of Counsel shall not be obtained at the expense of the Trustee, the Seller, the Master Servicer or the Depositor. The Holder hereof desiring to effect such transfer shall, and does hereby agree to, indemnify the Trustee and the Depositor against any liability that may result if the transfer is not so exempt or is not made in accordance with such federal and state laws.) No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation (letter) from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code, nor a person acting on behalf of any such plan, which representation letter shall not be an expense of the Trustee or the Master Servicer, (ii) if the purchaser is an insurance company, a representation that the purchaser is an insurance company which is purchasing such Certificates with funds contained in an "insurance company general account" (as such term is defined in Section V(e) of Prohibited Transaction Class Exemption 95-60 ("PTCE 95- 60")) and that the purchase and holding of such Certificates are covered under PTCE 95-60, or (iii) in the case of any such Certificate presented for registration in the name of an employee benefit plan subject to ERISA or Section 4975 of the Code (or comparable provisions of any subsequent enactments), or a trustee of any such plan or any other person acting on behalf of any such plan, an Opinion of Counsel satisfactory to the Trustee and the Master Servicer to the effect that the purchase or holding of such Certificate will not result in the assets of deemed to be "plan assets" and subject to the prohibited transaction provisions of ERISA and the Code and will not subject the Trustee to any obligation in addition to those undertaken in the Agreement, which Opinion of Counsel shall not be an expense of the Trustee or the Master Servicer. (Such representation shall be deemed to have been made to the Trustee by the Transferee's acceptance of a Certificate of this Class and by a beneficial owner's acceptance of its interest in a Certificate of this Class.) Notwithstanding anything else to the contrary herein, any purported transfer of a Certificate of this Class to or on behalf of an employee benefit plan subject to ERISA or to the Code without the opinion of counsel satisfactory to the Trustee as described above shall be void and of no effect. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee. * * *

Certificate No. 19-A-2-A-1-[__] Cut-off Date: October July 1, 2002 2004 First Distribution Date: November August 25, 2002 2004 Last Scheduled Distribution Date: November August 25, 2017 2034 Pass-Through Rate: Variable in accordance with the Agreement 6.00% Initial Certificate Principal Balance of this Certificate $[______[ ] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 110,000,000 of this Class: CUSIP: 55265K MA 4 576434 TM 6 ISIN: US576434 TM 65 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION ALTERNATIVE LOAN TRUST 20022004-7 Mortgage Pass-Through Certificates, Series 20022004-7 Class 19-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, the Trust Administrator, the Trustee or the Trustee Custodians referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ ] is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank MinnesotaBank, N.A., as master servicer (in such capacity, the "ServicerServxxxx"), xxx Xachovia Banktrust administrator (in such capacity, the "Trust Administrator") and a custodian, U.S. Bank National Association, as a custodian and as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the applicable Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the TrusteeTrust Administrator.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November 25September 27, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2004 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial ) : $ 15,594,000.00 Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$ 15,594,000.00 Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage 100.00% Pass-Through Rate : Variable CUSIP : 317350 BC 9 Class : II-A3 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-2 Asset-Backed Certificates, Series 20022004-7 2 Class 1II-A-2 A3 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class II-A3 Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class II-A3 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class II-A3 Certificate (obtained by dividing the Denomination of this Class II-A3 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Financial Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above August 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.HomEq Servicing Corporation, as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bankand Deutsche Bank National Trust Company, National Associationa national banking association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class II-A3 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class II-A3 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Class II-A3 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class II-A3 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of 100% this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, ) MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Capxxxx X Xxx. Xxust 2004-7 HE6 Mortgage PassPxxx-Through CertificatesXxrxxxx Xxrtificates, Series 20022004-7 HE6 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley & Co. Incorporated is the registered owner of the Percentage Interest evidenced by this Certificate in certain Percentxxx Xxtxxxxx xpecified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chase Xxxxxtxxx Xxxtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankCountrywide Home Loans Servicing LP, as servicer, HomEq Servicing Corporation, as servicer, Accredited Home Lenders, Inc., as a responsible party, NC Capital Corporation, as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicers or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 1-A-2-A-1-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 5.750% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 108,000,000 of this Class: CUSIP: 55265K MA 4 JX 8 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 6 Class 1-A-2 A-1 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October February 1, 2002 2005 First Distribution DateDate : November March 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2005 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP[__]% CUSIP : 55265K MA 4 36242D ZD 8 ISIN: : US36242DZD82 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2005-7 NC1 Mortgage Pass-Through Certificates, Series 20022005-7 NC1 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers, the Responsible Party or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above February 1, 2005 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Litton Loan Servicing LP, as master servicer servicer, New Century Mortgage Corporation, xx xervicer (collectively, the "Servicers"), NC Capital Corporation, as responsible party (the "ServicerResponsible Party"), xxx Xachovia Bank, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 15-A-2-A-1-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 6.000% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 76,020,000 of this Class: CUSIP: 55265K MA 4 KP 3 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 5 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] R-1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November September 25, 2002 Last Scheduled Distribution Date2004 Percentage Interest of : November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, ) 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 NC7 Mortgage PassXxxx-Through CertificatesXhxxxxx Xertificates, Series 20022004-7 NC7 Class 1-A-2 R evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the This Class R Certificate Principal has no Certificate Balance at any time may be less than the Certificate Principal Balance as set forth hereinand is not entitled to distributions in respect of principal or interest. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Morgan Stanley & Co. Incorporated is the registered owner of the Percentage Interest evidenced by this Certificate in certain Percenxxxx Xnxxxxxx specified above of any monthly distributions with respect due to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created Class R Certificates pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Chasx Xxxxaxxxx Xxrtgage Corporation, as master servicer (the "Servicer")servicer, xxx Xachovia BankHomEq Servicing Corporation, as servicer, New Century Mortgage Corporation, as servicer, NC Capital Corporation, as responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Any distribution of the proceeds of any remaining assets of the Trust Fund will be made only upon presentment and surrender of this Class R Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Class R Certificate shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan or arrangement subject to Section 406 of ERISA, a plan or arrangement subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement nor using the assets of any such plan or arrangement to effect such transfer, which representation letter shall not be an expense of the Trustee, the Servicers or the Trust Fund. In the event that such representation is violated, or any attempt is made to transfer to a plan or arrangement subject to Section 406 of ERISA or a plan subject to Section 4975 of the Code or a plan subject to Similar Law, or a person acting on behalf of any such plan or arrangement or using the assets of any such plan or arrangement, such attempted transfer or acquisition shall be void and of no effect. Each Holder of this Class R Certificate shall be deemed by the acceptance or acquisition an Ownership Interest in this Class R Certificate to have agreed to be bound by the following provisions, and the rights of each Person acquiring any Ownership Interest in this Class R Certificate are expressly subject to the following provisions: (i) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall be a Permitted Transferee and shall promptly notify the Trustee of any change or impending change in its status as a Permitted Transferee, (ii) no Ownership Interest in this Class R Certificate may be registered on the Closing Date or thereafter transferred, and the Trustee shall not register the Transfer of this Certificate unless, in addition to the certificates required to be delivered to the Trustee under Section 5.02(b) of the Agreement, the Trustee shall have been furnished with a Transfer Affidavit of the initial owner or the proposed transferee in the form attached as Exhibit G to the Agreement, (iii) each Person holding or acquiring any Ownership Interest in this Class R Certificate shall agree (A) to obtain a Transfer Affidavit from any other Person to whom such Person attempts to Transfer its Ownership Interest this Class R Certificate, (B) to obtain a Transfer Affidavit from any Person for whom such Person is acting as nominee, trustee or agent in connection with any Transfer of this Class R Certificate, (C) not to cause income with respect to the Class R Certificate to be attributable to a foreign permanent establishment or fixed base, within the meaning of an applicable income tax treaty, of such Person or any other U.S. Person and (D) not to Transfer the Ownership Interest in this Class R Certificate or to cause the Transfer of the Ownership Interest in this Class R Certificate to any other Person if it has actual knowledge that such Person is a Non-Permitted Transferee and (iv) any attempted or purported Transfer of the Ownership Interest in this Class R Certificate in violation of the provisions herein shall be absolutely null and void and shall vest no rights in the purported Transferee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] X-1 Cut-off DateDate : October November 1, 2002 2004 First Distribution DateDate : November 25December 27, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% XXXXXX XXXXXXX ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Xxxxxx Xxxxxxx ABS Capital I Inc. Trust 2004-7 HE9 Mortgage Pass-Through Certificates, Series 20022004-7 HE9 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Trustee or any other party to the Trustee Agreement referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Xxxxxx Xxxxxxx Mortgage Capital Inc., is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Xxxxxx Xxxxxxx ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.Countrywide Home Loans Servicing LP, as master servicer (the "Servicer")servicer, xxx Xachovia BankAames Capital Corporation, as a responsible party, NC Capital Corporation, as a responsible party, Accredited Home Lenders, Inc., as a responsible party, and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Certificate Balance or Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA or Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law") or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a non-exempt prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Depositor, the Trustee or the Servicer to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.. * * *

Certificate No. 17-A-2-A-11-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement 6.250% Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 6,444,000 of this Class: CUSIP: 55265K MA 4 LB 3 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 1-A-2-[__] Cut-off DateDate : October March 1, 2002 2004 First Distribution DateDate : November 25April 26, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP100% CUSIP : 55265K MA 4 362260 AL 5 ISIN: : US362260AL53 GS MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INCSECURITIES CORP. MASTR ASSET SECURITIZATION TRUST 2002GSAMP Trust 2004-7 FM2 Mortgage Pass-Through Certificates, Series 20022004-7 FM2 Class 1-A-2 X evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that [_______________ _________] is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above March 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate GS Mortgage Securities Inc.Corp., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank Minnesota, N.A.HomEq Servicing Corporation, as master servicer (the "Servicer"), xxx Xachovia and Wells Fargo Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent xxx xxtent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes or the office or agency maintained by the Trustee. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received either (i) a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable Federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee, or (ii) if the transferee is an insurance company, a representation letter that it is purchasing such Certificates with the assets of its general account and that the purchase and holding of such Certificates are covered under Sections I and III of PTCE 95-60, or (iii) in the case of a Certificate presented for registration in the name of an employee benefit plan subject to ERISA, or a plan or arrangement subject to Section 4975 of the Code (or comparable provisions of any subsequent enactments) or a plan subject to Similar Law, or a trustee of any such plan or any other person acting on behalf of any such plan or arrangement or using such plan's or arrangement's assets, an Opinion of Counsel satisfactory to the Trustee and the Servicer, which Opinion of Counsel shall not be an expense of the Trustee, the Servicer or the Trust Fund, addressed to the Trustee, to the effect that the purchase or holding of such Certificate will not constitute or result in a prohibited transaction within the meaning of ERISA, Section 4975 of the Code or any Similar Law and will not subject the Trustee or the Servicer to any obligation in addition to those expressly undertaken in this Agreement or to any liability. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.. * * *

Certificate No. 1-A-2-[__] P-1 Cut-off DateDate : October May 1, 2002 2004 First Distribution DateDate : November June 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance 2004 Percentage Interest of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class) : CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, 100% MORGAN STANLEY ABS CAPITAL I INC. MASTR ASSET SECURITIZATION TRUST 2002Morgan Stanley ABS Caxxxxx I Xxx. Xrust 2004-7 Mortgage PassHE3 Mortgagx Xxxx-Through Xxxxxxx Certificates, Series 20022004-7 HE3 Class 1-A-2 P evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal Class. Distributions in respect of this Certificate is are distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicers or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Deutsche Bank National Trust Company, as NIM Trustee, is the registered owner of the Percentage Interest evidenced by this Certificate (obtained by dividing the denomination of this Certificate by the aggregate of the denominations of all Certificates of the Class to which this Certificate belongs) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Morgan Stanley ABS Capital I Inc., as transferor depositor (the "TransferorDepositor"), Wells Fargo Bank MinnesotaChasx, N.A.XxxEx Xxxxxcing Corporation, as master servicer (the "ServicerHomEq"), xxx Xachovia BankAames Capital Corporation, as a responsible party ("Aames"), Manhattan Mortgage Corporation, as servicer ("Chase"), Accredited Home Lenders, Inc., as a responsible party ("Accredited"), NC Capital Corporation, as a responsible party ("NC Capital") and Deutsche Bank National AssociationTrust Company, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. This Certificate does not have a Pass-Through Rate and will be entitled to distributions only to the extent set forth in the Agreement. In addition, any distribution of the proceeds of any remaining assets of the Trust will be made only upon presentment and surrender of this Certificate at the offices designated by the Trustee for such purposes, or such other location specified in the notice to Certificateholders. No transfer of a Certificate of this Class shall be made unless such disposition is exempt from the registration requirements of the Securities Act of 1933, as amended (the "1933 Act"), and any applicable state securities laws or is made in accordance with the 1933 Act and such laws. In the event of any such transfer, the Trustee shall require the transferor to execute a transferor certificate (in substantially the form attached to the Pooling and Servicing Agreement) and deliver either (i) a Rule 144A Letter, in either case substantially in the form attached to the Agreement, or (ii) a written Opinion of Counsel to the Trustee that such transfer may be made pursuant to an exemption, describing the applicable exemption and the basis therefor, from the 1933 Act or is being made pursuant to the 1933 Act, which Opinion of Counsel shall be an expense of the transferor. No transfer of a Certificate of this Class shall be made unless the Trustee shall have received a representation letter from the transferee of such Certificate, acceptable to and in form and substance satisfactory to the Trustee, to the effect that such transferee is not an employee benefit plan subject to Section 406 of ERISA, Section 4975 of the Code or any materially similar provisions of applicable federal, state or local law ("Similar Law"), or a person acting on behalf of or investing plan assets of any such plan, which representation letter shall not be an expense of the Trustee. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned authenticated by an authorized signatory of the Trustee.

Certificate No. 1A-1-A-2-[__] Cut-off Date1 CUSIP No: October 1, 2002 First Distribution Date: November 25, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement Initial 805559 AD 3 This Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 of this Class: CUSIP: 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 evidencing evidences a percentage beneficial ownership interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three pools a pool of conventional mortgage loans Mortgage Loans (collectively, the "Mortgage Loans") secured formed and sold by first liens on one- to four-family residential properties Mortgage Asset Securitization TransactionsSAXON ASSET SECURITIES COMPANY THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN SAXON ASSET SECURITIES COMPANY, Inc.THE MASTER SERVICER, as Depositor Principal in respect of this Certificate is distributable monthly as set forth hereinANY SERVICER, THE TRUSTEE OR ANY OF THEIR AFFILIATES. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth hereinNEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ The Registered Holder named above is the registered owner of the Percentage Interest evidenced calculated as set forth below in the above mentioned Class of Certificates issued by this Certificate in certain monthly distributions with respect to a the Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "DepositorTrust"). The Trust Fund was ) created pursuant to a Pooling and Servicing Agreement trust agreement dated as of the Cut-off Date specified above November 1, 1996 (the "Trust Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo among Saxon Asset Securities Company (herein called "Saxon," which term includes any successor entity under the "Trust Agreement"), Texas Commerce Bank MinnesotaNational Association, as Master Servicer, Paying Agent, Custodian and Certificate Registrar, and Citibank, N.A., as master servicer (the "Servicer")Trustee, xxx Xachovia Bank, National Association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms a summary of certain of the Agreementpertinent provisions of which is set forth herein. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Trust Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, Trust Agreement to which Trust Agreement the Holder of this Certificate Certificate, by virtue of the acceptance hereof hereof, assents and by which such Holder is bound. Reference This Certificate is hereby made one of a duly authorized issue of Certificates designated as Mortgage Loan Asset Backed Certificates, Series 19962 (herein called the "Certificates") and represents a Percentage Interest in the above mentioned Class of Certificates equal to the further provisions quotient, expressed as a percentage, obtained by dividing the Denomination of this Certificate specified above by the Initial Principal Balance specified above of the above mentioned Class of Certificates. The Certificates are issued in multiple Classes designated as specifically set forth in the Trust Agreement. The Certificates will evidence in the aggregate 100% of the beneficial ownership of the Trust. To the extent and subject to the limitations set forth in the Trust Agreement, the Person in whose name this Certificate is registered at the close of business on the reverse hereoflast Business Day of the month immediately preceding the month of such distribution (the "Record Date") is entitled to receive the Distribution Amount with respect to the above mentioned Class of Certificates on the 25th day of each month or, which further provisions if such 25th day is not a Business Day, the next succeeding Business Day (each a "Distribution Date"), commencing on December 26, 1996. All amounts distributable with respect to this Certificate are payable in the coin or currency of the United States of America as at the time of payment is legal tender for the payment of public and private debts. The Certificates are limited in right of payment to certain collections and recoveries respecting the Mortgage Loans, all as more specifically set forth in the Trust Agreement. As provided in the Trust Agreement, withdrawals from the Asset Proceeds Account and related accounts shall be made from time to time for purposes other than distributions to Holders of the Certificates, such purposes including reimbursement of Advances made, or certain expenses incurred, with respect to the Mortgage Loans and administration of the Trust. So long as this Certificate is registered in the name of a Clearing Agency or its nominee, the Paying Agent will make distributions on this Certificate by wire transfer of immediately available funds to the Clearing Agency or its nominee. Otherwise, all distributions under the Trust Agreement will be made by the Paying Agent either (i) by check mailed to the address of the Holder as it appears on the Certificate Register on the related Record Date or (ii) upon request to the Paying Agent in writing by the Record Date immediately prior to the Distribution Date of any Holder of Certificates of this Class having an aggregate initial principal amount equal to or in excess of $1,000,000, by wire transfer of immediately available funds to the account of such Holder. A fee may be charged by the Paying Agent to a Certificateholder for any payment made by wire transfer. Notwithstanding the above, the final distribution on this Certificate will be made after due notice by the Paying Agent of a pendency of such distribution and only upon presentation and surrender of this Certificate at its principal Corporate Trust Office or such other offices or agencies appointed by the Paying Agent for that purpose and such other locations provided in the Trust Agreement. The Certificate Insurer is required, subject to the terms of the Certificate Insurance Policy, to make Insured Payments available to the Trustee (directly or through a Paying Agent) on or prior to the related Distribution Date for distribution to the Holders. Upon receipt of amounts under the Certificate Insurance Policy on behalf of the Holders of the above mentioned Class of Certificates, the Trustee shall distribute in accordance with the Trust Agreement such amounts (directly or through a Paying Agent) to the Holders of the above mentioned Class of Certificates. The Trustee will duly and punctually make distributions with respect to this Certificate in accordance with the terms hereof and the Trust Agreement. Amounts properly withheld under the Code by any Person from a distribution to any Holder shall be considered as having been distributed to such Holder for all purposes have of the Trust Agreement. The Trust Agreement permits, with certain exceptions therein provided, the amendment thereof and the modification of the rights and obligations of Saxon and the Trustee and the rights of the Holders of the Certificates under the Trust Agreement at any time by Saxon, the Master Servicer and the Trustee with consent of the Holders of Certificates entitled to at least 66% of the Voting Rights. Any such consent by the Holder of this Certificate shall be conclusive and binding on such Holder and upon all future Holders of this Certificate and of any Certificate issued upon the transfer hereof or in exchange hereof or in lieu hereof whether or not notation of such consent is made upon this Certificate. The Trust Agreement also permits the amendment thereof, in certain limited circumstances, without the consent of the Holders of any of the Certificates. Unless there is a Certificate Insurer Default, the Certificate Insurer is entitled to exercise all Voting Rights of the Class A Certificateholders. As provided in the Trust Agreement and subject to any limitations on transfer of this Certificate by a Clearing Agency or its nominee and certain limitations set forth in the Trust Agreement, the transfer of this Certificate is registerable in the Certificate Register upon surrender of this Certificate for registration of transfer at the principal Corporate Trust Office of the Certificate Registrar or such other offices or agencies appointed by the Trustee for that purpose and such other locations provided in the Trust Agreement, duly endorsed by or accompanied by an assignment in the form below or other written instrument of transfer in form satisfactory to the Certificate Registrar and duly executed by the Holder hereof or such Holder's attorney duly authorized in writing, and thereupon one or more new Certificates of the same Class in the same aggregate principal balance will be issued to the designated transferee or transferees. Subject to the terms of the Trust Agreement, the Certificates of this Class will be registered as one or more certificates held by a Clearing Agency or its nominee and beneficial interests will be held by Beneficial Owners through the book-entry facilities of such Clearing Agency or its nominee in minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof. As provided in the Trust Agreement and subject to certain limitations therein set forth, this Certificate is exchangeable for a new Certificate of the same Class in the same denomination. No service charge will be made for any such registration of transfer or exchange, but the Certificate Registrar may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any transfer or exchange of Certificates. Saxon, the Master Servicer, the Trustee, the Paying Agent and the Certificate Registrar and any agent of Saxon, the Master Servicer, the Trustee, the Paying Agent or the Certificate Registrar may treat the Person in whose name this Certificate is registered as the owner hereof for all purposes, and none of Saxon, the Master Servicer, the Trustee, the Paying Agent, the Certificate Registrar or any such agent shall be affected by notice to the contrary. The Trust Agreement provides that the obligations created thereby will terminate upon the earlier of (i) the payment to the Holders of all Certificates from amounts other than those available under the related Certificate Insurance Policy of all amounts held by the Trustee and required to be paid to such Holders pursuant to the Trust Agreement upon the later to occur of (a) the final payment or other liquidation (or any advance made with respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the disposition of all property acquired in respect of any Mortgage Loan remaining in the Trust Estate or (ii) at any time when a qualified liquidation of the Trust Estate is effected as described in the Agreement. The Trust Agreement also provides that (i) the Holders of a majority of the Class R Certificates may, at their option, purchase from the Trust all remaining Mortgage Loans and other property then constituting the Trust Estate, and thereby effect early retirement of the Certificates, on any Distribution Date after the Initial Optional Redemption Date and (ii) under certain circumstances relating to the qualification of the REMIC as if set forth at a REMIC under the Code the Mortgage Loans may be sold, thereby effecting the early retirement of the Certificates. Unless the certificate of authentication hereon has been executed by the Certificate Registrar, by manual signature, this place. This Certificate shall not be entitled to any benefit under the Trust Agreement or be valid for any purpose unless manually countersigned by an authorized signatory purpose. THIS CERTIFICATE AND THE TRUST AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK. The Trustee has executed this Certificate on behalf of the TrusteeTrust not in its individual capacity but solely as Trustee under the Trust Agreement, and the Trustee shall be liable hereunder only in respect of the assets of the Trust. Capitalized terms used and not defined herein have the meaning given them in the Trust Agreement.

Certificate No. 1-A-2-[__] 1 Cut-off DateDate : October August 1, 2002 2004 First Distribution DateDate : November 25September 27, 2002 Last Scheduled Distribution Date: November 25, 2017 Pass-Through Rate: Variable in accordance with the Agreement 2004 Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial ) : $ 39,000.000.00 Original Class Certificate Principal Balances of all Certificates $8,333,333 Balance of this ClassClass : CUSIP$ 39,000,000.00 Percentage Interest : 55265K MA 4 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 Mortgage 100.00% Pass-Through Rate : Variable CUSIP : 317350 BA 3 Class : II-A1 Assumed Maturity Date : August 2034 Finance America Mortgage Loan Trust 2004-2 Asset-Backed Certificates, Series 20022004-7 2 Class 1II-A-2 A1 evidencing a percentage interest the Percentage Interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a the Trust Fund consisting primarily of three pools of conventional first lien adjustable rate and fixed rate mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc.FINANCIAL ASSET SECURITIES CORP., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance of this Class II-A1 Certificate at any time may be less than the Initial Certificate Principal Balance as set forth on the face hereof, as described herein. This Class II-A1 Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer Servicer, or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ Cede & Co. is the registered owner of the Percentage Interest evidenced by this Class II-A1 Certificate (obtained by dividing the Denomination of this Class II-A1 Certificate by the Original Class Certificate Principal Balance) in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Financial Asset Securitization Transactions, Inc. Securities Corp. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above August 1, 2004 (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc.HomEq Servicing Corporation, as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia Bankand Deutsche Bank National Trust Company, National Associationa national banking association, as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Class II-A1 Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Class II-A1 Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Class II-A1 Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Class II-A1 Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.

Certificate No. 17-A-2-A-17-[__] Cut-off Date: October September 1, 2002 First Distribution Date: November October 25, 2002 Last Scheduled Distribution Date: November October 25, 2017 2032 Pass-Through Rate: Variable in accordance with the Agreement Initial Certificate Principal Balance of this Certificate $[______] ("Denomination"): Initial Certificate Principal Balances of all Certificates $8,333,333 5,407,500 of this Class: CUSIP: 55265K MA 4 LH 0 MORTGAGE ASSET SECURITIZATION TRANSACTIONS, INC. MASTR ASSET SECURITIZATION TRUST 2002-7 6 Mortgage Pass-Through Certificates, Series 2002-7 Class 1-A-2 6 evidencing a percentage interest in the distributions allocable to the Certificates of the above-referenced Class with respect to a Trust Fund consisting primarily of three seven pools of conventional mortgage loans (the "Mortgage Loans") secured by first liens on one- to four-family residential properties Mortgage Asset Securitization Transactions, Inc., as Depositor Principal in respect of this Certificate is distributable monthly as set forth herein. Accordingly, the Certificate Principal Balance at any time may be less than the Certificate Principal Balance as set forth herein. This Certificate does not evidence an obligation of, or an interest in, and is not guaranteed by the Depositor, the Servicer or the Trustee referred to below or any of their respective affiliates. Neither this Certificate nor the Mortgage Loans are guaranteed or insured by any governmental agency or instrumentality. This certifies that _______________ is the registered owner of the Percentage Interest evidenced by this Certificate in certain monthly distributions with respect to a Trust Fund consisting primarily of the Mortgage Loans deposited by Mortgage Asset Securitization Transactions, Inc. (the "Depositor"). The Trust Fund was created pursuant to a Pooling and Servicing Agreement dated as of the Cut-off Date specified above (the "Agreement") among the Depositor, UBS Warburg Real Estate Securities Inc., as transferor (the "Transferor"), Wells Fargo Bank Minnesota, N.A., as master servicer (the "Servicer"), xxx Xachovia BankXank One, National AssociationN.A., as trustee (the "Trustee"). Distributions on this Certificate will be made primarily from collections on the Mortgage Loans in Loan Group 1 7 pursuant to the terms of the Agreement. To the extent not defined herein, the capitalized terms used herein have the meanings assigned in the Agreement. This Certificate is issued under and is subject to the terms, provisions and conditions of the Agreement, to which Agreement the Holder of this Certificate by virtue of the acceptance hereof assents and by which such Holder is bound. Reference is hereby made to the further provisions of this Certificate set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. This Certificate shall not be entitled to any benefit under the Agreement or be valid for any purpose unless manually countersigned by an authorized signatory of the Trustee.