Common use of Principal if a Cross-Over Situation Exists Clause in Contracts

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool on such Distribution Date to the Class “C” Interest related to such Mortgage Pool. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: portion of the Trust Fund related to the Aggregate Pool created hereunder and the Exchangeable Certificates. Class 1-A-1 (1) (2) $43,291,000 $ 100,000.00 Class 1-A-2 MT-AR (1) (2) A$1,992,900 $ 100,000.00 Class 1-R MT-2A-3 (16) (2) $26,435,000 $ 100,000.00 Class 1-A-1 A-4 (16) (2) $16,856,000 $ 100,000.00 Class 1-A-4L (1) (3) 2$16,856,000 $ 100,000.00 Class 1-A-1 MT-2-A-2 A-4F (1) (34) $16,856,000 * $ 100,000.00 Class 2-A-2, A-1 (16) (5) $50,000,000 $ 100,000.00 Class 2-A-4 MT-2-A-3 A-1R (1) (36) $50,000,000 $ 100,000.00 Class 2-A-1K (1) (8) $50,000,000* $ 100,000.00 Class 2-A-2 (5) $279,817,000 $ 100,000.00 Class 2-A-3 MT-3(16) (5) $43,799,000 $ 100,000.00 Class 2-A-3L (1) (6) $43,799,000 $ 100,000.00 Class 2-A-3F (1) (4) $43,799,000* $ 100,000.00 Class 2-A-3M (1) (6) $43,799,000 $ 100,000.00 Class 2-A-3S (1) (7) $43,799,000* $ 100,000.00 Class 2-A-4 (16) (5) $120,364,000 $ 100,000.00 Class 2-A-4L (1) (6) $120,364,000 $ 100,000.00 Class 2-A-4F (1) (4) $120,364,000* $ 100,000.00 Class 2-A-4M (1) (6) $120,364,000 $ 100,000.00 Class 2-A-4S (1) (7) $120,364,000* $ 100,000.00 Class 2-A-4R (1) (6) $120,364,000 $ 100,000.00 Class 2-A-4K (1) (8) $120,364,000* $ 100,000.00 Class 2-A-5 (5) $22,736,000 $ 100,000.00 Class 3-A-1 (9) $120,648,000 $ 100,000.00 Class 3-A-2 (16) (9) $29,233,000 $ 100,000.00 Class 3-A-2L (1) (10) $29,233,000 $ 100,000.00 Class 3-A-2F (1) (4) $29,233,000* $ 100,000.00 Class 3-A-2M (1) (10) $29,233,000 $ 100,000.00 Class 3-A-2S (1) (7) $29,233,000* $ 100,000.00 Class 3-A-3 (16) (9) $58,587,000 $ 100,000.00 Class 3-A-3L (1) (10) $58,587,000 $ 100,000.00 Class 3-A-3F (1) (4) $58,587,000* $ 100,000.00 Class 3-A-3M (1) (10) $58,587,000 $ 100,000.00 Class 3-A-3S (1) (7) $58,587,000* $ 100,000.00 Class 3-A-4 (9) $9,595,000 $ 100,000.00 Class 4-A-1 (11) $77,034,000 $ 100,000.00 Class 4-A-2 (16) (11) $25,992,000 $ 100,000.00 Class 4-A-2L (1) (12) $25,992,000 $ 100,000.00 Class 4-A-2F (1) (4) $25,992,000* $ 100,000.00 Class 4-A-2M (1) (12) $25,992,000 $ 100,000.00 Class 4-A-2S (1) (7) $25,992,000* $ 100,000.00 Class 4-A-3 (11) $4,742,000 $ 100,000.00 Class B-1 (13) $15,198,000 $ 100,000.00 Class B-2 (13) $5,986,000 $ 100,000.00 Class B-3 (13) $4,604,000 $ 100,000.00 Class B-4 (13) $2,762,000 $ 100,000.00 Class B-5 (13) $2,302,000 $ 100,000.00 Class B-6 (13) $2,306,220 $ 100,000.00 Class A-R (2) $100 100% Class P (14) $100 100% _______________ *Notional Amount. (1) These Certificates are Exchangeable Certificates which will not be issued under this Agreement. (2) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2, Class 1-A-3, Class 1-A-4 and Class A-R Certificates will equal the Pool 1 Net WAC. (3) On each Distribution Date (and the related Accrual Period) on or prior to the related Interest Adjustment Date, the per annum Certificate Interest Rate for the Class 1-A-4L Certificates will equal the Pool 1 Net WAC, minus the related Certificate Margin. On each Distribution Date (and the related Accrual Period) after the related Interest Adjustment Date, the per annum Certificate Interest Rate for the Class 1-A-4L Certificates will equal the Pool 1 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC 1 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC 1 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table:: MT1-2-A-1 (1) (2) 2-A-1 MT1-2-A-2 (1) (2) 2-A-2 MT1-2-A-3 (1) (2) 2-A-3 MT1-2-A-4 (1) (2) 2-A-4 MT1-2-A-5 (1) (2) 2-A-5 MT1-3-A-1 (1) (3) 3-A-1 MT1-3-A-2 (1) (3) 3-A-2 MT1-4-A-1 (1) (4) 4-A-1 MT1-4-A-2 (1) (4) 4-A-2 MT1-5-A-1 (1) (5) 5-A-1 MT1-5-A-2 (1) (5) 5-A-2 MT1-CB-1 (1) (6) CB-1 MT1-CB-2 (1) (6) CB-2 MT1-CB-3 (1) (6) CB-3 MT1-CB-4 (1) (6) CB-4 MT1-CB-5 (1) (6) CB-5 MT1-CB-6 (1) (6) CB-6 MT1-A-R (7) (7) N/A (1) This Middle-Tier Interest shall have an initial principal balance equal to the initial principal balance of its Corresponding Class of Certificates. (2) This Middle-Tier Interest shall bear interest at the Pool 2 Net WAC. (3) This Middle-Tier Interest shall bear interest at the Pool 3 Net WAC. (4) This Middle-Tier Interest shall bear interest at the Pool 4 Net WAC. (5) This Middle-Tier Interest shall bear interest at the Pool 5 Net WAC. (6) This Middle-Tier Interest shall bear interest at the same rate as its Corresponding Class of Certificates. For federal income tax purposes, the pass through rate will be the Calculation Rate with respect to the Aggregate Pool A Certificates. (7) The Class MT1-R Interest is the sole class of residual interest in Middle-Tier REMIC 1. It has no principal balance and pays no principal or interest. On each Distribution Date, interest shall be distributed on the Middle-Tier Regular Interests based on the above-described interest rates. On each Distribution Date principal shall be distributed, and Realized Losses shall be allocated, among the Middle-Tier Regular Interests, pro rata, until the principal balance of each such Middle-Tier Interest equals the Class Principal Amount of the Corresponding Class of Certificates immediately after such Distribution Date; On each Distribution Date, Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A deemed to have been distributed to the Lower-Tier REMIC 1 Regular Interest with the letter “C” in its designation shall be deemed to be distributed to the Class MT1-CB-6 Interest. The Lower-Tier REMIC 2 Regular Interests shall have the initial Class Principal Amounts, pass-through rates and Corresponding Mortgage Pools as set forth in the following table: REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Class of Certificates LT2-1A1 (1) (2) 1-A-1 LT2-1A2 (1) (2) 1-A-2 MTLT2-AR (1) (2) A-R MT-2-A-1 1A3 (1) (32) 21-A-1 MT-2A-3 LT2-A-2 1A4 (1) (32) 2-A-2, 21-A-4 MT-2LT2-A-3 1A5 (1) (2) 1-A-5 LT2-1M1 (1) (2) 1-M-1 LT2-1M2 (1) (2) 1-M-2 LT2-1B1 (1) (2) 1-B-1 LT2-1B2 (1) (2) 1-B-2 LT2-Q (3) (2) N/A LT2-A-3 MT-3A-A-1R (4) (4) N/A _______________ (1) This Lower-Tier REMIC 2 Interest shall have an initial principal balance equal to one-half of the initial Class Principal Amount of its Corresponding Class of Certificates.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. The MiddleOn each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC (REMIC 2) 1 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The MiddleLower-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Class of Certificates LT2-1A1 (1) (2) 1-A-1 LT2-1A2 (1) (2) 1-A-2 MTLT2-AR (1) (2) A-R MT-2-A-1 1M1 (1) (32) 21-A-1 MT-2M-1 LT2-A-2 1M2 (1) (32) 21-A-2, 2M-2 LT2-A-4 MT-2-A-3 1B1 (1) (2) 1-B-1 LT2-1B2 (1) (2) 1-B-2 LT2-Q (3) (2) N/A LT2-A-3 MT-3A-A-1R (4) (4) N/A _______________ (1) This Lower-Tier REMIC 2 Interest shall have an initial principal balance equal to one-half of the initial Class Principal Amount of its Corresponding Class of Certificates.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Component) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Component) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have Set forth below are designations of Classes or Components of Certificates and other defined terms to the initial categories used herein: Accretion Directed Certificates Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (A-1, Class 1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2Class 1-A-4 MT-2A-5, Class 1-A-7, Class 5-A-1, Class 5-A-2 and Class 5-A-3 (Certificates. Accretion Directed Components None. Accrual Certificates Class 1) (3) 2-A-3 MT-3A-8, Class 5-A-1A-2 and Class 5-A-5 Certificates. Accrual Components None. Book-Entry Certificates All Classes of Certificates other than the Physical Certificates. COFI Certificates None. Combined Certificates None. Component Certificates Class PO, Class X-1 and Class X-2 Certificates.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC 2 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The following table sets forth (or describes) the Class designation, Certificate Interest Rate, initial Class Principal Amount and minimum denomination for each Class of Certificates comprising interests in the Trust Fund created hereunder other than the Exchangeable Certificates. Class 1-A-1A (1) $225,000,000.00 $ 100,000.00 Class 1-A-2A (1) $150,660,000.00 $ 100,000.00 Class 1-A-3A (1) $47,733,000.00 $ 100,000.00 Class 1-A-1B (1) $101,307,000.00 $ 100,000.00 Class 1-A-4 (2) (1) $87,786,000.00 $ 100,000.00 Class 1-A-5 (2) (1) $68,054,000.00 $ 100,000.00 Class 1-M-1 (1) $13,059,000.00 $ 100,000.00 Class 1-M-2 (1) $6,893,000.00 $ 100,000.00 Class 1-M-3 (1) $4,353,000.00 $ 100,000.00 Class 1-M-4 (1) $3,265,000.00 $ 100,000.00 Class 1-M-5 (1) $2,539,000.00 $ 100,000.00 Class 1-M-6 (1) $2,540,000.00 $ 100,000.00 Class 1-B-1 (1) $3,627,000.00 $ 100,000.00 Class 1-B-2 (1) $3,991,000.00 $ 100,000.00 Class 2-A-1 (15) (3) $128,116,000.00 $ 100,000.00 Class 2-A-1A(4) (5) $128,116,000.00 $ 100,000.00 Class 2-A-1B (4) (5) $128,116,000.00 $ 100,000.00 Class 2-A-1C (4) (5) $128,116,000.00 $ 100,000.00 Class 2-A-1D (4) (5) $128,116,000.00 $ 100,000.00 Class 2-A-1E (4) (5) $128,116,000.00 $ 100,000.00 Class 2-A-1F (4) (6) $128,116,000.00* $ 100,000.00 Class 2-A-1G (4) (6) $128,116,000.00* $ 100,000.00 Class 2-A-1H (4) (6) $128,116,000.00* $ 100,000.00 Class 2-A-1I (4) (6) $128,116,000.00* $ 100,000.00 Class 2-A-1J (4) (6) $128,116,000.00* $ 100,000.00 Class 2-A-2 (3) $7,817,000.00 $ 100,000.00 Class 3-A-1 (15) (8) $106,417,000.00 $ 100,000.00 Class 3-A-1A (4) (9) $106,417,000.00 $ 100,000.00 Class 3-A-1B (4) (9) $106,417,000.00 $ 100,000.00 Class 3-A-1C (4) (9) $106,417,000.00 $ 100,000.00 Class 3-A-1D (4) (9) $106,417,000.00 $ 100,000.00 Class 3-A-1E (4) (9) $106,417,000.00 $ 100,000.00 Class 3-A-1F (4) (10) $106,417,000.00* $100,000.00 Class 3-A-1G (4) (10) $106,417,000.00* $100,000.00 Class 3-A-1H (4) (10) $106,417,000.00* $100,000.00 Class 3-A-1I (4) (10) $106,417,000.00* $100,000.00 Class 3-A-1J (4) (10) $106,417,000.00* $100,000.00 Class 3-A-2 (8) $6,493,000.00 $ 100,000.00 Class A-R N.A. $100 $100 Class C-B-1 (11) $5,940,000.00 $ 100,000.00 Class C-B-2 (11) $3,168,000.00 $ 100,000.00 Class C-B-3 (11) $1,848,000.00 $ 100,000.00 Class C-B-4 (11) $1,717,000.00 $ 100,000.00 Class C-B-5 (11) $1,452,000.00 $ 100,000.00 Class C-B-6 (11) $1,056,459.87 $ 100,000.00 Class 1-CE Interest (12) Notional 100% Class 1-P (13) $100 $100 Class 2-P (14) $100 $100 _______________ *Notional Amount (1) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1A, Class 1-A-2A, Class 1-A-3A, Class 1-A-1B, Class 1-A-4, Class 1-A-5, Class 1-M-1, Class 1-M-2, Class 1-M-3, Class 1-M-4, Class 1-M-5, Class 1-M-6, Class 1-B-1 and Class 1-B-2 Certificates will equal the least of (a) One- Month LIBOR plus the related Pool 1 Certificate Margin, (b) the related Pool 1 Net WAC (adjusted for the actual number of days in the Accrual Period) and (c) 11.50% per annum. The per annum Certificate Interest Rate for the Class 1-A-1A, Class 1-A-2A, Class 1-A-3A, Class 1-A-1B, Class 1-A-4, Class 1-A-5, Class 1-M-1, Class 1-M-2, Class 1-M-3, Class 1-M-4, Class 1-M-5, Class 1-M-6, Class 1-B-1 and Class 1-B-2 Certificates applicable to the Distribution Date in March 2007 will equal 5.460%, 5.380%, 5.470%, 5.380%, 5.530%, 5.520%, 5.580%, 5.600%, 5.620%, 5.690%, 5.710%, 5.800%, 6.320% and 7.320%, respectively. For purposes of the REMIC Provisions, the reference to “Pool 1 Net WAC” in clause (b) of the preceding sentence shall be deemed to be a reference to the Middle-Tier REMIC (REMIC 2) The 1 Net WAC Rate. For any Distribution Date on which the Certificate Interest Rate for each of these Classes of Certificates is based on the Pool 1 Net WAC, the amount of interest that would have been payable on such Certificates if the Middle-Tier REMIC Regular Interests will have 1 Net WAC Rate were substituted for the initial Class Principal Amounts, pass-through rates Pool 1 Net WAC over the amount actually payable thereon shall be treated as having been paid to the owners of such Certificates and Corresponding Certificate Classes as set forth in then deposited by such owners into the following table: (1Swap Trust pursuant to Section 10.01(k) (2) 1-A-2 MT-AR (1)hereof. (2) AThe Class 1-R MT-2A-4 Certificates are comprised of two components: the Class 1-A-1A-4-1 Component with an initial principal balance of $58,089,000 related to Pool 1A and the Class 1-A-4-2 Component with an initial principal balance of $29,697,000 related to Pool 1B. The Class 1-A-5 Certificates are comprised of two components: the Class 1-A-5-1 Component with an initial principal balance of $53,498,000 related to Pool 1A and the Class 1-A-5-2 Component with an initial principal balance of $14,556,000 related to Pool 1B. (1) (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1 MT-2and Class 2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 2 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Component) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Component) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table:. (1) (2) For each Distribution Date, the Class 1-A-2 MTA-4 Certificates are entitled to a specified portion of the interest payable on the Class MTR-1-AR (A-3 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1)-A-4 Certificates are entitled to the interest payable on the Class MTR-1-A-3 Middle Tier REMIC Interest at a per annum rate equal to 5.30% minus LIBOR, but not less than 0.00%. (2) A-R MT-2-A-1This Class of Middle Tier REMIC Interest pays no principal. (1) (3) 2For each Distribution Date, the Class MTR-1-A-1 MT-2X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-A-2 X-1 Lower Tier REMIC Interest. (14) For each Distribution Date, the Class MTR-2-X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-X-2 Lower Tier REMIC Interest. (35) 2For each Distribution Date, the Class MTR-A-2, 2PO Middle Tier REMIC Interest is entitled to all the principal payable with respect to the Class LTR-A-4 MT-2PO-1 Lower Tier REMIC Interest and the Class LTR-A-3 (1) (3) 2-A-3 MT-3-A-1PO-2 Lower Tier REMIC Interest.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC 1 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC 1 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : MT1-2-A-1 (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2MT1-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2A-X MT1-2-A-3 (1) (32) 2-A-3 MT-3MT1-A-13-A-1 (1) (2) 3-A-1 MT1-3-A-2 (1) (2) 3-A-2 MT1-4-A-1 (1) (2) 4-A-1 MT1-4-A-2 (1) (2) 4-A-2 MT1-4-A-3 (1) (2) 4-A-3 MT1-4-A-4 (1) (4) 4-A-4, 4-A-X MT1-5-A-1 (1) (2) 5-A-1 MT1-5-A-2 (1) (2) 5-A-2 MT1-CB-1 (1) (5) CB-1 MT1-CB-2 (1) (5) CB-2 MT1-CB-3 (1) (5) CB-3 MT1-CB-4 (1) (5) CB-4 MT1-CB-5 (1) (5) CB-5 MT1-CB-6 (1) (5) CB-6 MT1-A-R (6) (6) N/A (1) This Middle-Tier Interest shall have an initial principal balance equal to the initial principal balance of its Corresponding Class of Certificates (other than any Corresponding Certificate that is an Interest-Only Certificate). (2) This Middle-Tier Interest shall bear interest at the same rate as its Corresponding Class of Certificates. (3) This Middle-Tier Interest shall bear interest at the Pool 2 Net WAC. (4) This Middle-Tier Interest shall bear interest at the Pool 4 Net WAC. (5) This Middle-Tier Interest shall bear interest at the same rate as its Corresponding Class of Certificates. For federal income tax purposes, the pass through rate will be the Calculation Rate with respect to the Aggregate Pool A Certificates. (6) The Class MT1-R Interest is the sole class of residual interest in Middle-Tier REMIC 1. It has no principal balance and pays no principal or interest. On each Distribution Date, interest shall be distributed on the Middle-Tier Regular Interests based on the above-described interest rates. On each Distribution Date principal shall be distributed, and Realized Losses shall be allocated, among the Middle-Tier Regular Interests, pro rata, until the principal balance of each such Middle-Tier Interest equals the Class Principal Amount of the Corresponding Class of Certificates immediately after such Distribution Date; On each Distribution Date, Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A deemed to have been distributed to the Lower-Tier REMIC 1 Regular Interest with the letter “C” in its designation shall be deemed to be distributed to the Class MT1-CB-6 Interest. The Lower-Tier REMIC 2 Regular Interests shall have the initial Class Principal Amounts, pass-through rates and Corresponding Mortgage Pools as set forth in the following table: REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Class of Certificates LT2-1A1 (1) (2) 1-A-1 LT2-1A2 (1) (2) 1-A-2 LT2-1M1 (1) (2) 1-M-1 LT2-1M2 (1) (2) 1-M-2 LT2-1B1 (1) (2) 1-B-1 LT2-1B2 (1) (2) 1-B-2 LT2-Q (3) (2) N/A LT2-A-R (4) (4) N/A _______________ (1) This Lower-Tier REMIC 2 Interest shall have an initial principal balance equal to one-half of the initial Class Principal Amount of its Corresponding Class of Certificates.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool on such Distribution Date to the Class “C” Interest related to such Mortgage Pool. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: portion of the Trust Fund related to the Aggregate Pool created hereunder. Class 1-A-1 (1) (2) $207,496,000 $ 100,000.00 Class 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 M (1) (3) $207,496,000 $ 100,000.00 Class 1-A-1S (1) (4) $207,496,000* $ 100,000.00 Class 1-A-2 (14) (2) $130,929,000 $ 100,000.00 Class 1-A-3 (14) (2) $18,730,000 $ 100,000.00 Class 1-A-3M (1) (3) $18,730,000 $ 100,000.00 Class 1-A-3S (1) (4) $18,730,000* $ 100,000.00 Class 1-A-4 (14) (2) $57,837,000 $ 100,000.00 Class 1-A-4L (1) (3) $57,837,000 $ 100,000.00 Class 1-A-4F (1) (5) $57,837,000* $ 100,000.00 Class 1-A-4M (1) (3) $57,837,000 $ 100,000.00 Class 1-A-4S (1) (4) $57,837,000* $ 100,000.00 Class 1-A-5 (2) $7,860,900 $ 100,000.00 Class 2-A-1 MT-2(1) (6) $334,774,000 $ 100,000.00 Class 2-A-1M (1) (7) $334,774,000 $ 100,000.00 Class 2-A-1S (1) (4) $334,774,000* $ 100,000.00 Class 2-A-2 (14) (6) $193,316,000 $ 100,000.00 Class 2-A-3 (14) (6) $46,666,000 $ 100,000.00 Class 2-A-3L (1) (7) $46,666,000 $ 100,000.00 Class 2-A-3F (1) (5) $46,666,000* $ 100,000.00 Class 2-A-3M (1) (7) $46,666,000 $ 100,000.00 Class 2-A-3S (1) (4) $46,666,000* $ 100,000.00 Class 2-A-4 (14) (6) $94,792,000 $ 100,000.00 Class 2-A-4L (1) (7) $94,792,000 $ 100,000.00 Class 2-A-4F (1) (5) $94,792,000* $ 100,000.00 Class 2-A-4M (1) (7) $94,792,000 $ 100,000.00 Class 2-A-4S (1) (4) $94,792,000* $ 100,000.00 Class 2-A-5 (6) $12,682,000 $ 100,000.00 Class 3-A-1 (1) (8) $230,357,000 $ 100,000.00 Class 3-A-1M (1) (9) $230,357,000 $ 100,000.00 Class 3-A-1S (1) (4) $230,357,000* $ 100,000.00 Class 3-A-2 (1) (8) $172,243,000 $ 100,000.00 Class 3) 2-A-2, 2M (1) (9) $172,243,000 $ 100,000.00 Class 3-A-4 MT-2A-2S (1) (4) $172,243,000* $ 100,000.00 Class 3-A-3 (1) (8) $58,114,000 $ 100,000.00 Class 3-A-3L (1) (9) $58,114,000 $ 100,000.00 Class 3-A-3F (1) (5) $58,114,000* $ 100,000.00 Class 3-A-3M (1) (9) $58,114,000 $ 100,000.00 Class 3-A-3S (1) (4) $58,114,000* $ 100,000.00 Class 3-A-4 (14) (8) $133,062,000 $ 100,000.00 Class 3-A-5 (1) (8) $68,338,000 $ 100,000.00 Class 3-A-6 (1) (8) $99,674,101 $ 100,000.00 Class 3-A-6L (1) (9) $99,674,101 $ 100,000.00 Class 3-A-6F (1) (5) $99,647,101* $ 100,000.00 Class 3-A-6M (1) (9) $99,647,101 $ 100,000.00 Class 3-A-6S (1) (4) $99,647,101* $ 100,000.00 Class 3-A-7 (14) (8) $28,957,000 $ 100,000.00 Class 3-A-7L (1) (9) $28,957,000 $ 100,000.00 Class 3-A-7F (1) (5) $28,957,000* $ 100,000.00 Class 3-A-7M (1) (9) $28,957,000 $ 100,000.00 Class 3-A-7S (1) (4) $28,957,000* $ 100,000.00 Class 3-A-L1 (14) (8) $39,181,000 $ 100,000.00 Class 3-A-L2 (14) (8) $29,157,000 $ 100,000.00 Class 3-A-8 (8) $8,727,000 $ 100,000.00 Class 4-A-1 (10) $76,745,000 $ 100,000.00 Class 4-A-2 (10) $3,491,000 $ 100,000.00 Class B-1 (11) $17,397,000 $ 100,000.00 Class B-2 (11) $5,951,000 $ 100,000.00 Class B-3 (11) $2,746,000 $ 100,000.00 Class B-4 (11) $3,204,000 $ 100,000.00 Class B-5 (11) $1,831,000 $ 100,000.00 Class B-6 (11) $2,290,984 $ 100,000.00 Class A-R (2) $100 100% Class P (12) $100 100% _______________ (1) Notional Amount. These Certificates are Exchangeable Certificates which will not be issued under this Agreement. (2) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2, Class 1-A-3, Class 1-A-4, Class 1-A-5 and Class A-R Certificates will equal the Pool 1 Net WAC. (3) 2-A-3 MT-3On each Distribution Date (and the related Accrual Period) on or prior to the related Interest Adjustment Date, the per annum Certificate Interest Rate for the Class 1-A-1M, Class 1-A-3M, Class 1-A-4L and Class 1-A-4M Certificates will equal the Pool 1 Net WAC, minus the related Certificate Margin. On each Distribution Date (and the related Accrual Period) after the related Interest Adjustment Date, the per annum Certificate Interest Rate for the Class 1-A-1M, Class 1-A-3M, Class 1-A-4L and Class 1-A-4M Certificates will equal the Pool 1 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Certificates) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Certificates), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Certificates) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Certificates) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-following table specifies the class designation, interest rate, and principal amount for each class of Middle Tier REMIC (REMIC 2) The Middle-Interests: ------------------------------- -------------------------- ---------------------------- ---------------------------- Middle Tier REMIC Regular Interests will have the initial Class Initial Principal Amounts, passInterest Rate Corresponding Master Interest Balance REMIC Certificate ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) A-1 $50,000,000 5.50% 1-A-2 MT-AR (A-1 and 1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-3 $193,835,000 5.50% 1-A-3 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-4 $105,000,000 5.50% 1-A-4 and 1-A-5 (2) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-6 $89,922,000 5.50% 1-A-6 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-7 $30,000,000 5.50% 1-A-7 and 1-A-8 (3) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-9 $36,139,000 5.50% 1-A-9 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-10 $53,557,000 5.50% 1-A-10 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-11 $68,711,000 5.50% 1-A-11 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-12 $3,389,000 5.50% 1-A-12 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-13 $23,657,000 5.50% 1-A-13 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-14 $25,000,000 5.50% 1-A-2 and 1-A-14 (4) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-15 $1,325,000 5.50% 1-A-15 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1X (5) (6) 1-X ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-1 $62,259,000 7.00% 2-A-2, A-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-2 $3,070,000 7.00% 2-A-4 MT-2A-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-3 X (5) (7) 2-X ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-$100 $100 5.50% A-R ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-PO (8) (9) PO-1 and PO-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-M $21,348,200 (10) M ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-1 $7,116,000 (10) B-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-2 $4,348,600 (10) B-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-3 $3,953,300 (10) B-3 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-4 $3,162,600 (10) B-4 ------------------------------- -------------------------- ---------------------------- ---------------------------- ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-5 $1,976,646.24 (10) B-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-P $100.00 (11) P ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-A-R (12) (12) N/A ------------------------------- -------------------------- ---------------------------- ---------------------------- (1) For each Distribution Date, the Class 1-A-2 Certificates are entitled to a portion of the interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-2 Certificates are entitled to the interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest at a per annum rate equal to 5.10% minus LIBOR, but not less than 0.00%. (2) For each Distribution Date, the Class 1-A-5 Certificates are entitled to a portion of the interest payable on the Class MTR-1-A-4 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-5 Certificates are entitled to the interest payable on the Class MTR-1-A-4 Middle Tier REMIC Interest at a per annum rate equal to 5.00% minus LIBOR, but not less than 0.00%. (3) 2For each Distribution Date, the Class 1-A-3 MT-3A-8 Certificates are entitled to a portion of the interest payable on the Class MTR-1-A-1A-7 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-8 Certificates are entitled to the interest payable on the Class MTR-1-A-7 Middle Tier REMIC Interest at a per annum rate equal to 4.80% minus LIBOR, but not less than 0.00%. (4) For each Distribution Date, the Class 1-A-2 Certificates are entitled to a portion of the interest payable on the Class MTR-1-A-14 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-2 Certificates are entitled to the interest payable on the Class MTR-1-A-14 Middle Tier REMIC Interest at a per annum rate equal to 5.10% minus LIBOR, but not less than 0.00%. (5) This Class of Middle Tier REMIC Interest pays no principal.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Distribution Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amountsprincipal amounts, pass-through rates and Corresponding Certificate Classes Class as set forth in the following table: : MT-1-A-1 (1) (2) 1-A-1, 1-A-X MT-1-A-2 MT-AR (1) ) (2) 1-A-2, 1-A-R X MT-2-A-1 A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 A-IO MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1 (1) (4) 3-A-1, 3-A-IO MT-3-A-2 (1) (4) 3-A-2 MT-4-A-1 (1) (5) 4-A-1 MT-4-A-2 (1) (5) 4-A-2, 4-A-IO MT-4-A-3 (1) (5) 4-A-3 MT-B-1 (1) (6) B-1 MT-B-2 (1) (6) B-2 MT-B-3 (1) (6) B-3 MT-B-4 (1) (6) B-4 MT-B-5 (1) (6) B-5 MT-B-6 (1) (6) B-6 MT-R (7) (7) N/A (1) This Middle-Tier Interest shall have an initial principal balance equal to the initial principal balance of its Corresponding Class of Certificates. (2) This Middle-Tier Interest shall bear interest at a rate equal to the weighted average of the Lower-Tier Interests corresponding to Pool 1. (3) This Middle-Tier Interest shall bear interest at a rate equal to the weighted average of the Lower-Tier Interest corresponding to Pool 2.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group in Aggregate Loan Group I, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during as of the Due Period Date (as adjusted for amounts allocated to the related Class PO Component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancessuch Loan Group’s Class C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups in Aggregate Loan Group I will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups in Aggregate Loan Group I (as adjusted for amounts allocated to the related Class PO Component) as of the end of any Due Date (reduced by principal prepayments received in the Prepayment Period related to that Due Date that are to be distributed on the related Distribution Date) over (ii) the aggregate Class Certificate Balance of the Group I Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's such Loan Group’s Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Component) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Group in Aggregate Loan Group I if the aggregate Class A and Class B Tracking Interests of which such Loan Group are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier Sub WAC REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier Sub WAC REMIC as a reimbursement for prior Realized Losses. The Middleforegoing REMIC structure is intended to cause all of the cash from the Mortgage Loans to flow through to the Master REMIC as cash flow on a REMIC regular interest, without creating any shortfall-actual or potential (other than for credit losses) to any REMIC regular interest. The following table specifies the class designation, interest rate, and principal amount for each class of Lower Tier REMIC (REMIC 2) The MiddleInterests: LTR-3-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 A-1 (1) (3) 23-A-1 MT-2LTR-3-A-2 (1) (3) 23-A-2, 2-A-4 MT-2A-2 LTR-3-A-3 (1) (3) 23-A-3 MT-3LTR-3-A-1A-4 (1) (3) 3-A-4 LTR-3-A-5 (1) (3) 3-A-5 LTR-3-M-1 (1) (3) 3-M-1 LTR-3-M-2 (1) (3) 3-M-2 LTR-3-M-3 (1) (3) 3-M-3 LTR-3-B (1) (3) 3-B LTR-3-C (2) (3) 3-C LTR-3-P $ 100 (4)(5) 3-P LTR-$100 $ 100 (5) 3-A-R LTR-A-R (6) (6) N/A (1) This LTR REMIC Interest has a principal balance that is initially equal to 100% of its Corresponding Certificate Class issued by the Upper Tier REMIC. Principal payments, both scheduled and prepaid, Realized Losses and Subsequent Recoveries attributable to Loan Group 3 will be allocated to this Class to maintain its size relative to its Corresponding Certificate Class. (2) This LTR REMIC Interest has a principal balance that is initially equal to 100% of the Overcollateralization Amount. Principal payments, both scheduled and prepaid, Realized Losses and Subsequent Recoveries attributable to Loan Group 3 will be allocated to this class to maintain its size relative to the Overcollateralization Amount. (3) The pass-through rate with respect to any Distribution Date (and the related Interest Accrual Period) for this LTR REMIC Interest is a per annum rate equal to the weighted average Adjusted Net Mortgage Rate of the Mortgage Loans in Loan Group 3 (the “Pool Net Rate Cap”). (4) This LTR REMIC Interest is entitled to all Prepayment Charges with respect to the Mortgage Loans in Loan Group 3. (5) This LTR REMIC Interest pays no interest. (6) The LTR-A-R is the sole class of residual interest in the Lower Tier REMIC. It pays no interest or principal. On each Distribution Date, the Group II Interest Funds and the Group II Principal Distribution Amount shall be payable with respect to the LTR REMIC Interests in the following manner:

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: Trust Fund created hereunder. Class 1-A-1 (1) (2) $573,113,100.00 $ 100,000.00 Class 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2$ 22,329,100.00 $ 100,000.00 Class 1-A-3 (1) $ 20,000,000.00 $ 100,000.00 Class 1-A-4 (1) $ 2,038,600.00 $ 100,000.00 Class 2-A-1 (2) $396,186,800.00 $ 100,000.00 Class 2-A-2 (2) $ 54,125,700.00 $ 100,000.00 Class 2-A-3 (2) $178,153,600.00 $ 100,000.00 Class 2-A-4 (2) $ 25,000,000.00 $ 100,000.00 Class 2-A-5 (2) $ 9,928,000.00 $ 100,000.00 Class 2-A-6 (2) $ 28,781,800.00 $ 100,000.00 Class 2-A-7 (2) $ 24,634,500.00 $ 100,000.00 Class 2-A-8 (2) $ 27,927,700.00 $ 100,000.00 Class 3-A-1 (3) $100,000,000.00 $ 100,000.00 Class 3-A-2 (3) $112,949,500.00 $ 100,000.00 Class 3-A-3 (3) $ 36,525,600.00 $ 100,000.00 Class 3-A-4 (3) $ 9,719,900.00 $ 100,000.00 Class 4-A-1 (4) $118,761,600.00 $ 100,000.00 Class 5-A-1 (5) $ 13,981,800.00 $ 100,000.00 Class 6-A-1 (6) $ 25,000,000.00 $ 100,000.00 Class 6-A-2 (6) $ 71,160,500.00 $ 100,000.00 Class 6-A-3 (6) $ 40,724,900.00 $ 100,000.00 Class 6-A-4 (6) $ 5,333,300.00 $ 100,000.00 Class A-R (1) $100 100% Class B-1 (7) $ 32,509,500.00 $ 100,000.00 Class B-2 (7) $ 15,762,000.00 $ 100,000.00 Class B-3 (7) $ 7,881,000.00 $ 100,000.00 Class B-4 (7) $ 7,881,000.00 $ 100,000.00 Class B-5 (7) $ 5,910,700.00 $ 100,000.00 Class B-6 (7) $ 3,940,794.46 $ 100,000.00 (1) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2, Class 1-A-3, Class 1-A-4 and Class A-R Certificates will equal the Pool 1 Net WAC. (2) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-3 MT-3A-1, Class 2-A-2, Class 2-A-3, Class 2-A-4, Class 2-A-5, Class 2-A-6, Class 2-A-7 and Class 2-A-8 Certificates will equal the Pool 2 Net WAC. (3) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, Class 3-A-3 and Class 3-A-4 Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Mortgage Pool Group 6 (1) (2) 16 LT2-A-2 MTA-AR R (3) (3) N/A _______________ (1)) This Lower-Tier REMIC 2 Interest shall have an initial principal balance equal to the aggregate Stated Principal Balance of the Mortgage Loans in Pool 6 as of the Cut-off Date. (2) A Rate equal to the weighted average of the Net Mortgage Rates of the Mortgage Loans in Pool 6. (3) The Class LT2-A-R MT-2Interest is the sole class of residual interest in Lower-A-1 Tier REMIC 2. It has no principal balance and pays no principal or interest. On each Distribution Date, the interest portion of the Available Funds from Pool 6 shall be distributed as interest to the Group 6 Interest and the principal portion of the Available Funds from Pool 6 shall be distributed as principal to the Group 6 Interest. The following table sets forth (or describes) the Class designation, Certificate Interest Rate, initial Class Principal Amount and minimum denomination for each Class of Certificates comprising interests in the Trust Fund created hereunder. Class 1-A-1 (1) (3) 2-A-1 MT-2$197,998,400 $ 25,000.00 Class 1-A-2 (1) $61,807,200 $ 25,000.00 Class 2-A-1 (2) $202,193,300 $ 25,000.00 Class 2-A-2 (2) $65,686,300 $ 25,000.00 Class 2-A-3 (2) $9,715,900 $ 25,000.00 Class 3-A-1 (3) $46,721,900 $ 25,000.00 Class 3-A-2 (3) $24,666,100 $ 25,000.00 Class 3-A-3 (3) $18,167,800 $ 25,000.00 Class 3-A-4 (3) $6,225,900 $ 25,000.00 Class 4-A-1 (4) $20,042,100 $ 25,000.00 Class 5-A-1 (5) $167,078,300 $ 25,000.00 Class T-A-1 (6) $333,748,100 $ 25,000.00 Class A-R (1) $100 100% Class I-B-1 (7) $13,601,200 $ 25,000.00 Class I-B-2 (7) $5,950,300 $ 25,000.00 Class I-B-3 (7) $3,400,200 $ 25,000.00 Class I-B-4 (7) $2,975,100 $ 25,000.00 Class I-B-5 (7) $2,125,100 $ 25,000.00 Class I-B-6 (7) $1,700,381 $ 25,000.00 Class T-B-1 (6) $5,346,900 $ 25,000.00 Class T-B-2 (6) $2,069,700 $ 25,000.00 Class T-B-3 (6) $1,379,800 $ 25,000.00 Class T-B-4 (6) $1,034,800 $ 25,000.00 Class T-B-5 (6) $689,900 $ 25,000.00 Class T-B-6 (6) $690,141 $ 25,000.00 (1) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R Certificates will equal the Pool 1 Net WAC. (2) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1, Class 2-A-2 and Class 2-A-3 Certificates will equal the Pool 2 Net WAC. (3) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, 2Class 3-A-3 and Class 3-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from each such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from each such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage PoolsPool, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (2) 1- A-2 MT-1-AR (1) (2) 1-A-2 MTAR MT-2-AR A-1 (1) ) (3) 2) A-R A-1, 2-A-5 MT-2-A-1 A-2 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 A-1 MT-2-A-4 (1) (3) 2-A-1 MT-3-A-1

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool on such Distribution Date to the Class “C” Interest related to such Mortgage Pool. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Mortgage Pool Pool 6 (1) (2) 16 LT2-A-2 MTA-AR R (3) (3) N/A (1)) The Pool 6 Interest shall have a principal balance initially equal to the initial Aggregate Stated Principal Balance of Pool 6. (2) AA Rate equal to the weighted average of the Net Mortgage Rates of the Mortgage Loans of Pool 6. (3) The Class LT2 A R Interest is the sole class of residual interest in Lower-R MT-2Tier REMIC 2. It has no principal balance and pays no principal or interest. On each Distribution Date, the Available Funds from each Mortgage Pool in Pool 6 shall be distributed with respect to principal and interest on the Pool 6 Interest as described above. The following table sets forth (or describes) the Class designation, Certificate Interest Rate, initial Class Principal Amount and minimum denomination for each Class of Certificates comprising interests in the portion of the Trust Fund related to the Aggregate Pool created hereunder. Class 1-A-1 A-1 (1) (3) 2-A-1 MT-2$155,000,000.00 $ 100,000.00 Class 1-A-2 (1) (3) 2-A-2, 2-A-4 MT-2$150,017,700.00 $ 100,000.00 Class 1-A-3 (1) $20,143,500.00 $ 100,000.00 Class 1-A-4 (1) $66,770,800.00 $ 100,000.00 Class 1-A-5 (1) $16,543,300.00 $ 100,000.00 Class 2-A-1 (2) $50,000,000.00 $ 100,000.00 Class 2-A-2 (2) $66,447,100.00 $ 100,000.00 Class 2-A-3 (2) $22,128,200.00 $ 100,000.00 Class 2-A-4 (2) $5,698,900.00 $ 100,000.00 Class 3-A-1 (3) $50,000,000.00 $ 100,000.00 Class 3-A-2 (3) $64,038,300.00 $ 100,000.00 Class 3-A-3 (3) $55,804,600.00 $ 100,000.00 Class 3-A-4 (3) $17,003,200.00 $ 100,000.00 Class 3-A-5 (3) $7,684,000.00 $ 100,000.00 Class 4-A-1 (4) $169,100,800.00 $ 100,000.00 Class 4-A-2 (4) $114,771,700.00 $ 100,000.00 Class 4-A-3 (4) $100,000,000.00 $ 100,000.00 Class 4-A-4 (4) $27,419,200.00 $ 100,000.00 Class 4-A-5 (4) $3,046,600.00 $ 100,000.00 Class 4-A-6 (4) $17,039,500.00 $ 100,000.00 Class 5-A-1 (5) $14,523,100.00 $ 100,000.00 Class 5-A-2 (5) $597,300.00 $ 100,000.00 Class A-R (1) $100.00 100% Class B-1 (6) $29,829,200.00 $ 100,000.00 Class B-2 (6) $7,457,200.00 $ 100,000.00 Class B-3 (6) $4,971,400.00 $ 100,000.00 Class B-4 (6) $2,485,700.00 $ 100,000.00 Class B-5 (6) $1,864,300.00 $ 100,000.00 Class B-6 (6) $2,485,933.88 $ 100,000.00 Class P (7) $100.00 100% _______________ (1) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2, Class 1-A-3, Class 1-A-4, Class 1-A-5 and Class A-R Certificates will equal the Pool 1 Net WAC. (2) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1, Class 2-A-2, Class 2-A-3 MT-3and Class 2-A-4 Certificates will equal the Pool 2 Net WAC. (3) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, Class 3-A-3, Class 3-A-4 and Class 3-A-5 Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the Group's PO component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the Group's PO component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups as of the end of any Due Period over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the Groups' PO components) will be paid to the Class C Tracking Interests of the other Mortgage PoolsLoan Groups, the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier REMIC Tracking as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have Set forth below are designations of Classes or Components of Certificates and other defined terms to the initial categories used herein: Accretion Directed Certificates..................Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (A-1, Class 1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, Class 2-A-4 MT-2A-6, Class 3-A-1 and Class 3-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates. Accretion Directed Components....................None.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Pool I Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier I REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier I REMIC as a reimbursement for prior Realized Losses. THE LOWER-TIER II REMIC The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier II REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : Initial Principal Pass-Through Corresponding Lower-Tier II REMIC Interests Amount Rate Mortgage Pool ----------------------------- --------- ------------- ------------- A-5 (0.9% of SP Group 5) (1) (2) 1-A-2 MT-AR 5 B-5 (0.1% of SP Group 5) (1)) (2) 5 C-5 (Excess of Group 5) (1) (2) 5 A-6 (0.9% of SP Group 6) (1) (2) 6 B-6 (0.1% of SP Group 6) (1) (2) 6 C-6 (Excess of Group 6) (1) (2) 6 A-7 (0.9% of SP Group 7) (1) (2) 7 B-7 (0.1% of SP Group 7) (1) (2) 7 C-7 (Excess of Group 7) (1) (2) 7 LT-II-A-R (3) (3) N/A (1) Each Class A Interest will have a principal balance initially equal to 0.9% of the Pool Subordinated Amount ("SP") of its corresponding Mortgage Pool. Each Class B Interest will have a principal balance initially equal to 0.1% of the Pool Subordinated Amount of its corresponding Mortgage Pool. The initial principal balance of each Class C Interest will equal the excess of the initial aggregate principal balance of its corresponding Mortgage Pool over the initial aggregate principal balances of the Class A and Class B Interests corresponding to such Mortgage Pool. (2) A Rate equal to the weighted average of the Net Mortgage Rates of the Mortgage Loans of the corresponding Mortgage Pool. (3) The Class LT-II-A-R MT-2Interest is the sole class of residual interest in the Lower-A-1 (1) (3) 2Tier II REMIC. It has no principal balance and pays no principal or interest. On each Distribution Date, the Available Funds from Mortgage Pools 5, 6 and 7 shall be distributed with respect to their corresponding Lower-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Tier II REMIC Interests in the following manner:

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool I Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to Mortgage Pool 2 on such Distribution Date to the Class C-2 Interest. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 1 Interests Initial Principal Amount Pass-Through Rate Corresponding Mortgage Pool A-4 (0.9% of SP Group 4) (1) (2) 1-A-2 MT-AR 4 B-4 (1) (20.1% of SP Group 4) A-R MT-2-A-1 (1) (32) 2-A-1 MT-2-A-2 4 C-4 (Excess of Group 4) (1) (32) 2-A-2, 2-A-4 MT-2-A-3 4 A-5 (0.9% of SP Group 5) (1) (2) 5 B-5 (0.1% of SP Group 5) (1) (2) 5 C-5 (Excess of Group 5) (1) (2) 5 LT2-A-R (3) 2-A-3 MT-3-A-1(3) N/A _______________ (1) Each Class A Interest shall have a principal balance initially equal to 0.9% of the Pool Subordinate Amount (“SP”) of its corresponding Mortgage Pool. Each Class B Interest shall have a principal balance initially equal to 0.1% of the Pool Subordinate Amount of its corresponding Mortgage Pool. The initial principal balance of each Class C Interest shall equal the excess of the initial aggregate principal balance of its corresponding Mortgage Pool over the initial aggregate principal balances of the Class A and Class B Interests corresponding to such Mortgage Pool.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenInterests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Tax Net WACRate Cap, then Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Tax Net WACRate Cap, then Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Tax Net WACRate Cap. With respect to each Mortgage PoolCorresponding Loan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the corresponding Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Interests of the other Mortgage PoolsCorresponding Loan Group, the aggregate Class A and Class B Interests of which are less than one percent 1% of the Pool Subordinated AmountSubordinate Portion of such Loan Groups. If the Mortgage Pool of a Loan Group corresponding to the Class C Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. STRIP REMIC: The Middlefollowing table specifies the Class designation, interest rate, and principal amount for each Class of STRIP REMIC Interests: Corresponding Class The Strip REMIC Interests Initial Balance Pass-Tier REMIC (REMIC 2) The MiddleThrough Rate of Certificates SR-1-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: A-1 (1) (2) Class 1-A-1 SR-1-A-2 (1) (2) Class 1-A-2 MTSR-2-AR (1) (2) A-R MT-2-A-1 A-1 (1) (3) Class 2-A-1 MT-2SR-2-A-2 (1) (3) Class 2-A-2, 2-A-4 MT-2A-2 SR-2-A-3 (1) (3) Class 2-A-3 MT-3SR-$100 $100 (4) Class A-A-1R SR-M-1 (1) (5) Class M-1 SR-M-2 (1) (5) Class M-2 SR-M-3 (1) (5) Class M-3 SR-M-4 (1) (5) Class M-4 SR-M-5 (1) (5) Class M-5 SR-M-6 (1) (5) Class M-6 SR-M-7 (1) (5) Class M-7 SR-M-8 (1) (5) Class M-8 SR-M-9 (1) (5) Class M-9 SR-P $100 (4) Class P SR-C (1) (5) Class C SR-A-R (6) (6) N/A (1) On each Distribution Date, following the allocation of scheduled principal, principal prepayments and Realized Losses, the Class SR-1-A-1 Interest, Class SR-1-A-2 Interest, Class SR-2-A-1 Interest, Class SR-2-A-1 Interest, Class SR-2-A-2 Interest, Class SR-2-A-3, Class SR-$100, Class SR-M-1 Interest, Class SR-M-2 Interest, Class SR-M-3 Interest, Class SR-M-4 Interest, Class SR-M-5 Interest, Class SR-M-6 Interest, Class SR-M-7, Class SR-M-8 Interest Interest and Class SR-M-9 Interest will each have a principal balance that is equal to 100% of its corresponding Certificate Class issued by the Master REMIC, and the Class SR-C Interest will have a principal balance that is equal to the Overcollateralized Amount. (2) The interest rate with respect to any Distribution Date (and the related Interest Accrual Period) for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 1 Mortgage Loans (the "Group 1 Tax Net Rate Cap"). (3) The interest rate with respect to any Distribution Date (and the related Interest Accrual Period) for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 2 Mortgage Loans (the "Group 2 Tax Net Rate Cap"). (4) The SR-$100 Interest and the Class SR-P Interest do not pay any interest. All Prepayment Charges allocated to the Class SR-P Interest will be allocated to the Class SR-P Interest. (5) On each Distribution Date, the Subordinate Tax Net Rate Cap. (6) The Class SR-A-R Interest is the sole class of residual interest in Strip REMIC. It has no principal balance and pays no principal or interest. On each Distribution Date, the Interest Funds, the Principal Distribution Amount and the Prepayment Charges payable with respect to the STRIP REMIC Regular Interests will be payable with respect to the Strip REMIC Interests in the following manner:

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Certificates) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Certificates), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Certificates) as of the end of any Due Period over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Certificates) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-following table specifies the class designation, interest rate, and principal amount for each class of Middle Tier REMIC (REMIC 2) The Middle-Interests: ------------------------- ---------------------- ----------------------- ---------------------- Middle Tier REMIC Regular Interests will have the initial Initial Principal Interest Rate Corresponding Master Interest Balance REMIC Certificate ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-A-1 $85,200,000.00 5.50% Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (A-1, Class 1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2------------------------- ---------------------- ----------------------- ---------------------- MTR-1-A-2, 2A-3 $18,029,000.00 5.50% Class 1-A-3 ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-A-4 MT-2$11,044,000.00 5.50% Class 1-A-3 A-4 ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-A-5 $2,541,000.00 5.50% Class 1-A-5 ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-A-6 $13,056,000.00 5.50% Class 1-A-6 ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-A-7 $544,000.00 5.50% Class 1-A-7 ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-X (12) (3) Class 1-X ------------------------- ---------------------- ----------------------- ---------------------- MTR-2-A-1 $117,728,000.00 6.50% Class 2-A-1, Class 2-A-2 (4) ------------------------- ---------------------- ----------------------- ---------------------- MTR-2-A-3 $4,906,000.00 6.50% Class 2-A-3 MT-3------------------------- ---------------------- ----------------------- ---------------------- MTR-2-A-1X (2) (5) Class 2-X ------------------------- ---------------------- ----------------------- ---------------------- MTR-1-$100 $100.00 5.50% Class A-R ------------------------- ---------------------- ----------------------- ---------------------- MTR-PO-A (6) (7) Class PO-A ------------------------- ---------------------- ----------------------- ---------------------- MTR-PO-B (8) (7) Class PO-B ------------------------- ---------------------- ----------------------- ---------------------- MTR-M $4,763,000.00 (9) Class M ------------------------- ---------------------- ----------------------- ---------------------- MTR-B-1 $2,116,600.00 (9) Class B-1 ------------------------- ---------------------- ----------------------- ---------------------- MTR-B-2 $1,323,000.00 (9) Class B-2 ------------------------- ---------------------- ----------------------- ---------------------- MTR-B-3 $926,100.00 (9) Class B-3 ------------------------- ---------------------- ----------------------- ---------------------- MTR-B-4 $793,800.00 (9) Class B-4 ------------------------- ---------------------- ----------------------- ---------------------- MTR-B-5 $661,459.33 (9) Class B-5 ------------------------- ---------------------- ----------------------- ---------------------- MTR-P $100.00 (10) Class P ------------------------- ---------------------- ----------------------- ---------------------- MTR-A-R (11) (11) N/A ------------------------- ---------------------- ----------------------- ---------------------- (1) For each Distribution Date, the Class 1-A-2 Certificates are entitled to a portion of the interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-2 Certificates are entitled to the interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest at a per annum rate equal to 4.80% minus LIBOR, but not less than 0.00%. (2) This Class of Middle Tier REMIC Interest pays no principal. (3) For each Distribution Date, the Class MTR-1-X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-X-1 Lower Tier REMIC Interest. (4) For each Distribution Date, the Class 2-A-2 Certificates are entitled to a portion of the interest payable on the Class MTR-2-A-1 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 2-A-2 Certificates are entitled to the interest payable on the Class MTR-2-A-1 Middle Tier REMIC Interest at a per annum rate equal to 6.10% minus LIBOR, but not less than 0.00%. (5) For each Distribution Date, the Class MTR-2-X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-X-2 Lower Tier REMIC Interest.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC 2 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The following table sets forth (or describes) the Class designation, Certificate Interest Rate, initial Class Principal Amount and minimum denomination for each Class of Certificates comprising interests in the Trust Fund created hereunder other than the Exchangeable Certificates. Class 1-1-A1 (1) $369,061,000.00 $ 100,000.00 Class 1-1-A2 (1) $41,007,000.00 $ 100,000.00 Class 1-2-A1 (1) $325,000,000.00 $ 100,000.00 Class 1-2-A2 (1) $140,680,000.00 $ 100,000.00 Class 1-2-A3 (1) $60,684,000.00 $ 100,000.00 Class 1-2-A4 (1) $74,062,000.00 $ 100,000.00 Class 1-2-A5 (1) $72,269,000.00 $ 100,000.00 Class 1-2-A6 (1) $50,000,000.00 $ 100,000.00 Class 1-M-1 (1) $19,280,000.00 $ 100,000.00 Class 1-M-2 (1) $10,244,000.00 $ 100,000.00 Class 1-M-3 (1) $6,627,000.00 $ 100,000.00 Class 1-M-4 (1) $4,218,000.00 $ 100,000.00 Class 1-M-5 (1) $4,218,000.00 $ 100,000.00 Class 1-M-6 (1) $4,218,000.00 $ 100,000.00 Class 1-B-1 (1) $6,026,000.00 $ 100,000.00 Class 1-B-2 (1) $7,230,000.00 $ 100,000.00 Class 2-A-1 (2) (3) $66,699,000.00 $ 100,000.00 Class 2-A-1A(4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1B (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1C (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1D (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1E (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1F (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1G (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1H (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1I (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1J (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-2 (3) $4,069,000.00 $ 100,000.00 Class 3-A-1 (2) (8) $56,460,000.00 $ 100,000.00 Class 3-A-1A (4) (9) $56,460,000.00 $ 100,000.00 Class 3-A-1B (4) (10) $56,460,000.00* $ 100,000.00 Class 3-A-1C (4) (9) $56,460,000.00 $ 100,000.00 Class 3-A-1D (4) (10) $56,460,000.00* $ 100,000.00 Class 3-A-1E (4) (9) $56,460,000.00 $ 100,000.00 Class 3-A-1F (4) (10) $56,460,000.00* $100,000.00 Class 3-A-1G (4) (9) $56,460,000.00 $100,000.00 Class 3-A-1H (4) (10) $56,460,000.00* $100,000.00 Class 3-A-1I (4) (9) $56,460,000.00 $100,000.00 Class 3-A-1J (4) (10) $56,460,000.00* $100,000.00 Class 3-A-2 (8) $3,445,000.00 $ 100,000.00 Class 4-A-1 (2) (11) $65,031,000.00 $ 100,000.00 Class 4-A-1A (4) (12) $65,031,000.00 $ 100,000.00 Class 4-A-1B (4) (13) $65,031,000.00* $ 100,000.00 Class 4-A-1C (4) (12) $65,031,000.00 $ 100,000.00 Class 4-A-1D (4) (13) $65,031,000.00* $ 100,000.00 Class 4-A-1E (4) (12) $65,031,000.00 $ 100,000.00 Class 4-A-1F (4) (13) $65,031,000.00* $100,000.00 Class 4-A-1G (4) (12) $65,031,000.00 $100,000.00 Class 4-A-1H (4) (13) $65,031,000.00* $100,000.00 Class 4-A-1I (4) (12) $65,031,000.00 $100,000.00 Class 4-A-1J (4) (13) $65,031,000.00* $100,000.00 Class 4-A-2 (11) $3,967,000.00 $ 100,000.00 Class A-R N.A. $100 $100 Class C-B-1 (14) $4,980,000.00 $ 100,000.00 Class C-B-2 (14) $2,436,000.00 $ 100,000.00 Class C-B-3 (14) $1,377,000.00 $ 100,000.00 Class C-B-4 (14) $1,483,000.00 $ 100,000.00 Class C-B-5 (14) $1,059,000.00 $ 100,000.00 Class C-B-6 (14) $848,289.05 $ 100,000.00 Class 1-CE Interest (15) Notional 100% Class 1-P (16) $100 $100 Class 2-P (17) $100 $100 *Class Notional Amount (1) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-1-A1, Class 1-1-A2, Class 1-2-A1, Class 1-2-A2, Class 1-2-A3, Class 1-2-A4, Class 1-2-A5, Class 1-M-1, Class 1-M-2, Class 1-M-3, Class 1-M-4, Class 1-M-5, Class 1-M-6, Class 1-B-1 and Class 1-B-2 Certificates will equal the least of (a) LIBOR plus the related Pool 1 Certificate Margin, (b) the related Pool 1 Net WAC (adjusted for the actual number of days in the Accrual Period) and (c) 11.50% per annum. The per annum Certificate Interest Rate for the Class 1-1-A1, Class 1-1-A2, Class 1-2-A1, Class 1-2-A2, Class 1-2-A3, Class 1-2-A4, Class 1-2-A5, Class 1-M-1, Class 1-M-2, Class 1-M-3, Class 1-M-4, Class 1-M-5, Class 1-M-6, Class 1-B-1 and Class 1-B-2 Certificates applicable to the Distribution Date in June 2007 will equal 5.500%, 5.650%, 5.520%, 5.420%, 5.510%, 5.600%, 5.600%, 5.640%, 5.670%, 5.750%, 5.920%, 6.120%, 6.520%, 7.320% and 7.320%, respectively. The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-2-A6 Certificates will equal the least of (a) the Federal Funds Rate plus the related Pool 1 Certificate Margin, (b) the related Pool 1 Net WAC (adjusted for the actual number of days in the Accrual Period) and (c) 11.50% per annum. The per annum Certificate Interest Rate for the Class 1-2-A6 Certificates applicable to the Distribution Date in June 2007 will equal 5.420%. For purposes of the REMIC Provisions, the reference to “Pool 1 Net WAC” in clause (b) of the preceding sentence shall be deemed to be a reference to the Middle-Tier REMIC (REMIC 2) The 1 Net WAC Rate. For any Distribution Date on which the Certificate Interest Rate for each of these Classes of Certificates is based on the Pool 1 Net WAC, the amount of interest that would have been payable on such Certificates if the Middle-Tier REMIC Regular Interests will have 1 Net WAC Rate were substituted for the initial Class Principal Amounts, pass-through rates Pool 1 Net WAC over the amount actually payable thereon shall be treated as having been paid to the owners of such Certificates and Corresponding Certificate Classes as set forth in then deposited by such owners into the following table: (1Supplemental Interest Trust pursuant to Section 10.01(k) (2) 1-A-2 MT-AR (1)hereof. (2) A-R MT-2-A-1This class shall be issued in uncertificated form and shall constitute an Uncertificated REMIC Interest. Each Class of Exchangeable REMIC Certificates will be entitled to the same distributions of principal and interest as the corresponding Uncertificated REMIC Interest. (1) (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1 MT-2and Class 2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 2 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool on such Distribution Date to the Class “C” Interest related to such Mortgage Pool. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table:portion of the Trust Fund related to the Aggregate Pool created hereunder. Class 1-A-1 (1) $37,920,900 $ 100,000 Class 2-A-1 (2) $248,000,000 $ 100,000 Class 2-A-2 (2) $40,026,000 $ 100,000 Class 2-A-3 (2) $6,013,000 $ 100,000 Class 2-A-4 (2) $17,253,000 $ 100,000 Class 2-A-5 (2) $13,648,000 $ 100,000 Class 3-A-1 (3) $53,100,000 $ 100,000 Class 3-A-2 (3) $35,544,000 $ 100,000 Class 3-A-3 (3) $25,574,000 $ 100,000 Class 3-A-4 (3) $130,333,000 $ 100,000 Class 3-A-5 (3) $17,662,000 $ 100,000 Class 3-A-6 (3) $58,254,000 $ 100,000 Class 3-A-7 (3) $14,050,000 $ 100,000 Class 4-A-1 (4) $311,074,000 $ 100,000 Class 4-A-2 (4) $16,373,000 $ 100,000 Class 5-A-1 (5) $221,048,000 $ 100,000 Class 5-A-2 (5) $9,692,000 $ 100,000 Class 6-A-1 (6) $55,969,000 $ 100,000 Class 6-A-2 (6) $2,454,000 $ 100,000 Class A-R (1) $100.00 100% Class B-1 (7) $25,272,000 $ 100,000 Class B-2 (7) $8,878,000 $ 100,000 Class B-3 (7) $6,829,000 $ 100,000 Class B-4 (7) $4,097,000 $ 100,000 Class B-5 (7) $3,414,000 $ 100,000 Class B-6 (7) $3,417,249 $ 100,000 Class P (8) $100.00 100% (1) The Certificate Interest Rate with respect to any Distribution Date (2and the related Accrual Period) for the Class 1-A-2 MTA-1 and Class A-AR (1)R Certificates will equal the Pool 1 Net WAC. (2) A-R MT-2The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) , Class 2-A-2, Class 2-A-3, Class 2-A-4 MT-2and Class 2-A-3 (1) A-5 Certificates will equal the Pool 2 Net WAC. (3) 2-A-3 MT-3The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-A-5, Class 3-A-6 and Class 3-A-7 Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: Trust Fund created hereunder. Class Designation Certificate Interest Rate Initial Class Principal Amount Minimum Denominations or Percentage Interest Class 1-A-1 (1) (2) $198,851,840 $ 25,000.00 Class 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) $ 6,150,060 $ 25,000.00 Class 2-A-1 (2) $ 99,675,260 $ 25,000.00 Class 2-A-2 (2) $ 3,082,740 $ 25,000.00 Class 3-A-1 (3) $ 85,966,630 $ 25,000.00 Class 3-A-2 (3) $ 78,648,970 $ 25,000.00 Class 3-A-3 (3) $ 25,000,000 $ 25,000.00 Class 3-A-4 (3) $ 5,864,400 $ 25,000.00 Class 4-A-1 (4) $ 98,607,000 $ 25,000.00 Class 5-A-1 (5) $160,920,100 $ 25,000.00 Class 5-A-2 (5) $ 22,929,700 $ 25,000.00 Class 5-A-3 (5) $ 5,686,100 $ 25,000.00 Class 6-A-1 (6) $179,422,350 $ 25,000.00 Class 6-A-2 (6) $ 5,549,150 $ 25,000.00 Class 7CB1 (7) $131,149,200 $ 25,000.00 Class 7CB2 (7) $ 4,056,200 $ 25,000.00 Class 8-A-1 (8) $ 14,559,100 $ 25,000.00 Class 9-A-1 (9) $ 15,456,600 $ 25,000.00 Class A-R (1) $100 100% Class B-1 (10) $ 15,300,920 $ 25,000.00 Class B-2 (10) $ 8,238,184 $ 25,000.00 Class B-3 (10) $ 3,530,650 $ 25,000.00 Class B-4 (10) $3,530,650 $ 100,000.00 Class B-5 (10) $1,765,325 $ 100,000.00 Class B-6 (10) $2,942,209 $ 100,000.00 (1) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R Certificates will equal the Pool 1 Net WAC. (2) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1 and Class 2-A-2 Certificates will equal the Pool 2 Net WAC. (3) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, 2Class 3-A-3 and Class 3-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Subordinate Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) In addition, on each Distribution Date, each Class C Interest will be entitled to receive all Prepayment Premiums received with respect to the related Mortgage Pool for the preceding Prepayment Period to the extent payable to the Class P Certificates. The Middle-Tier REMIC Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes of Certificates as set forth in the following table: : MT-1-A-1 (1) (27) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2MT-1-A-2 (1) (37) 1-A-2 MT-2-A-1 (2) (7) 2-A-2A-1, 2-A-4 A-X MT-2-A-3 A-2 (2) (7) 2-A-2 MT-3-A-1 (3) (7) 3-A-1, 3-A-X MT-3-A-2 (3) (7) 3-A-2 MT-4-A-1 (4) (7) 4-A-1 MT-4-A-2 (4) (7) 4-A-2 MT-B-1 (5) (7) B-1 MT-B-2 (5) (7) B-2 MT-B-3 (5) (7) B-3 MT-B-4 (5) (7) B-4 MT-B-5 (5) (7) B-5 MT-B-6 (5) (7) B-6 MT-R (1) (7) A-R MT-A-R (6) (6) N/A (1) This Middle-Tier Interest shall bear interest at a per annum rate with respect to any Distribution Date (and the related Accrual Period) equal to the Pool 1 Net WAC. (2) This Middle-Tier Interest shall bear interest at a per annum rate with respect to any Distribution Date (and the related Accrual Period) equal to the Pool 2 Net WAC. (3) 2This Middle-A-3 MT-3-A-1Tier Interest shall bear interest at a per annum rate with respect to any Distribution Date (and the related Accrual Period) equal to the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool II Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a reimbursement for prior Realized Losses. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: Trust Fund created hereunder. Class 1-A-1 (1) (2) $174,568,800 $ 100,000.00 Class 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) $7,368,500 $ 100,000.00 Class 2-A-1 (2) $84,509,200 $ 100,000.00 Class 2-A-2 (2) $11,725,800 $ 100,000.00 Class 2-A-3 (2) $37,696,900 $ 100,000.00 Class 2-A-4 (2) $5,507,900 $ 100,000.00 Class 3-A-1 (3) $38,285,200 $ 100,000.00 Class 3-A-2 (3) $365,505,700 $ 100,000.00 Class 3-A-3 (3) $50,000,000 $ 100,000.00 Class 3-A-4 (3) $65,000,000 $ 100,000.00 Class 3-A-5 (3) $6,500,000 $ 100,000.00 Class 3-A-6 (3) $21,602,300 $ 100,000.00 Class 4-A-1 (4) $83,536,000 $ 100,000.00 Class 4-A-2 (4) $3,435,400 $ 100,000.00 Class 5-A-1 (5) $40,003,900 $ 100,000.00 Class 5-A-2 (5) $15,724,100 $ 100,000.00 Class 5-A-3 (5) $2,291,800 $ 100,000.00 Class 6-A-1 (6) $195,536,300 $ 100,000.00 Class 6-A-2 (6) $3,990,600 Class 7-A-1 (7) $322,107,000 Class 7-A-2 (7) $6,573,700 $ 100,000.00 Class A-R (1) $100 100% Class I-B-1 (8) $20,571,300 $ 100,000.00 Class I-B-2 (8) $7,911,900 $ 100,000.00 Class I-B-3 (8) $4,747,100 $ 100,000.00 Class I-B-4 (8) $3,164,700 $ 100,000.00 Class I-B-5 (8) $2,637,300 $ 100,000.00 Class I-B-6 (8) $2,637,650 $ 100,000.00 Class II-B-1 (9) $6,214,200 $ 100,000.00 Class II-B-2 (9) $2,701,800 $ 100,000.00 Class II-B-3 (9) $1,080,700 $ 100,000.00 Class II-B-4 (9) $810,500 $ 100,000.00 Class II-B-5 (9) $810,500 $ 100,000.00 Class II-B-6 (9) $540,619 $ 100,000.00 Class P (10) $100 100% (1) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R Certificates will equal the Pool 1 Net WAC. (2) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1, Class 2-A-2, Class 2-A-3 and Class 2-A-4 MT-2-A-3 (1) Certificates will equal the Pool 2 Net WAC. (3) 2-A-3 MT-3The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, Class 3-A-3, Class 3-A-4, Class 3-A-5 and Class 3-A-6 Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC 1 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC 1 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : MT1-2-A-1 (1) (2) 12-A-1 MT1-2-A-2 MT-AR (1) ) (2) A2-R MT-2A-2 MT1-A-1 3-A-1 (1) (3) 23-A-1 MT-2MT1-3-A-2 (1) (3) 23-A-2, 2A-2 MT1-A-4 MT-2-A-3 CB-1 (1) (4) CB-1 MT1-CB-2 (1) (4) CB-2 MT1-CB-3 (1) (4) CB-3 MT1-CB-4 (1) (4) CB-4 MT1-CB-5 (1) (4) CB-5 MT1-CB-6 (1) (4) CB-6 MT1-A-R (5) (5) N/A (1) This Middle-Tier Interest shall have an initial principal balance equal to the initial principal balance of its Corresponding Class of Certificates. (2) This Middle-Tier Interest shall bear interest at the Pool 2 Net WAC. (3) 2This Middle-A-3 MT-3-A-1Tier Interest shall bear interest at the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the Group's PO component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the Group's PO component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups as of the end of any Due Period over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the Groups' PO components) will be paid to the Class C Tracking Interests of the other Mortgage PoolsLoan Groups, the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier REMIC Tracking as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have Set forth below are designations of Classes or Components of Certificates and other defined terms to the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following tablecategories used herein: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenInterests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolCorresponding Loan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period due period and (b) the Realized Lossesrealized losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups as of the end of any Due Period due period (reduced by principal prepayments received after the due period that are to to be distributed on the Disribution Date related to the due period) over (ii) the aggregate Certificate Principal Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the corresponding Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Interests of the other Mortgage PoolsCorresponding Loan Groups, the aggregate Class A and Class B Interests of which are less than one percent 1% of the Pool Subordinated AmountPortion of such Loan Groups. If the Mortgage Pool of a Loan Group corresponding to the Class C Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate below the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate above the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. The Middlefollowing table specifies the class designation, interest rate, and principal amount for each class of Strip REMIC Interest: ST-1-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: A-1 $107,209,000 (1) Class 0-X-0 XX-0-X-0 $4,980,900 (1) Class 0-X-0 XX-0-X-0 $152,205,000 (2) 1Class 0-A-2 MTX-0 XX-0-AR (1) X-0 $7,070,000 (2) AClass 0-R MT-2X-0 XX-0-X-0 $75,000,000 (3) Class 3-A-1 , Class 3-A-2 (8) ST-3-A-3 $133,992,000 (3) Class 0-X-0 XX-0-X-0 $9,708,000 (3) Class 0-X-0 XX-0-X-0 $65,380,000 (4) Class 0-X-0 XX-0-X-0 $3,038,000 (4) Class 0-X-0 XX-0-X-0 $135,783,000 (5) Class 0-X-0 XX-0-X-0 $6,308,000 (5) Class 0-X-0 XX-$00-XX $50.00 (1) Class A-UR ST-B-1 $14,637,000 (36) 2Class B-1 ST-A-1 MT-2B-2 $5,489,000 (6) Class B-2 ST-A-2 B-3 $4,390,000 (16) Class B-3 ST-B-4 $2,562,000 (6) Class B-4 ST-B-5 $2,195,000 (6) Class B-5 ST-B-6 $1,829,775 (6) Class B-6 ST-A-UR (7) (37) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1N/A

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Component) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Component) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-following table specifies the class designation, interest rate, and principal amount for each class of Middle Tier REMIC (REMIC 2) The Middle-Interests: -------------------------------------------------------------------------------------------------------------------- Middle Tier REMIC Regular Interests will have the initial Class Interest Initial Principal AmountsBalance Interest Rate Corresponding Master REMIC Certificate -------------------------------------------------------------------------------------------------------------------- MTR-1-A-1 $51,462,500.00 7.50% 1-A-1, pass1-through rates and Corresponding Certificate Classes as set forth in the following table: A-2 (1) -------------------------------------------------------------------------------------------------------------------- MTR-1-A-3 $65,000,000.00 5.75% 1-A-3 -------------------------------------------------------------------------------------------------------------------- XXX-0-X-0 $000,000,000.00 5.75% 1-A-4 -------------------------------------------------------------------------------------------------------------------- XXX-0-X-0 $00,000,769.00 6.50% 1-A-5 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-6 $6,519,231.00 (2) 1-A-6 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-7 $40,733,000.00 6.25% 1-A-7 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-8 $3,542,000.00 (2) 1-A-8 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-9 $28,750,000.00 6.00% 1-A-9 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-10 $6,250,000.00 6.00% 1-A-10 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-11 $29,416,400.00 6.00% 1-A-11 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-12 $3,350,000.00 6.00% 1-A-12 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-13 $1,410,000.00 6.00% 1-A-13 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-14 $2,350,000.00 6.00% 1-A-14 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-15 $2,900,000.00 6.00% 1-A-15 -------------------------------------------------------------------------------------------------------------------- MTR-1-A-16 $600,000.00 6.00% 1-A-16 -------------------------------------------------------------------------------------------------------------------- MTR-1-X (3) (4) 1-X -------------------------------------------------------------------------------------------------------------------- MTR-2-A-1 $210,817,000.00 6.25% 2-A-1 -------------------------------------------------------------------------------------------------------------------- XXX-0-X-0 $00,000,000.00 6.00% 2-A-2 MT-------------------------------------------------------------------------------------------------------------------- MTR-2-AR A-3 $20,000,000.00 6.50% 2-A-3 -------------------------------------------------------------------------------------------------------------------- MTR-2-A-4 $18,486,000.00 6.25% 2-A-4 -------------------------------------------------------------------------------------------------------------------- MTR-2-A-5 $30,570,000 6.25% 2-A-5, 2-A-7 (5) -------------------------------------------------------------------------------------------------------------------- MTR-2-A-6 $670,000.00 6.25% 2-A-6, 2-A-7 (5) -------------------------------------------------------------------------------------------------------------------- MTR-2-A-8 $760,000 6.25% 2-A-8, 2-A-7 (5) -------------------------------------------------------------------------------------------------------------------- MTR-2-X (3) (6) 2-X -------------------------------------------------------------------------------------------------------------------- MTR-1-$100 $100 6.00% A-R -------------------------------------------------------------------------------------------------------------------- MTR-PO (7) (2) PO -------------------------------------------------------------------------------------------------------------------- MTR-M-1 $16,762,700.00 (8) M-1 -------------------------------------------------------------------------------------------------------------------- MTR-M-2 $1,862,400.00 (8) M-2 -------------------------------------------------------------------------------------------------------------------- MTR-B-1 $8,194,700.00 (8) B-1 -------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------- MTR-B-2 $5,959,700.00 (8) B-2 -------------------------------------------------------------------------------------------------------------------- MTR-B-3 $3,724,900.00 (8) B-3 -------------------------------------------------------------------------------------------------------------------- MTR-B-4 $3,352,300.00 (8) B-4 -------------------------------------------------------------------------------------------------------------------- MTR-B-5 $2,979,941.28 (8) B-5 -------------------------------------------------------------------------------------------------------------------- MTR-A-R (9) (9) N/A -------------------------------------------------------------------------------------------------------------------- (1)) For each Distribution Date, the Class 1-A-2 Certificates are entitled to a specified portion of the interest payable on each of the Class MTR-1-A-1 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-2 Certificates are entitled to interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest at a per annum rate equal to 7.18% minus LIBOR, but not less than 0.00%. (2) A-R MT-2-A-1This Class of Middle Tier REMIC Interest pays no interest. (1) (3) This Class of Middle Tier REMIC Interest pays no principal. (4) For each Distribution Date, the Class MTR-1-X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-X-1 Lower Tier REMIC Interest. (5) For each Distribution Date, the Class 2-A-1 MT-2A-7 Certificates are entitled to a specified portion of the interest payable on each of the Class MTR-2-A-2 (1) (3) A-5 Middle Tier REMIC Interest, the Class MTR-2-A-6 Middle Tier REMIC Interest and the Class MTR-2-A-8 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 2-A-2, 2A-7 Certificates are entitled to interest payable on each of the Class MTR-2-A-4 MT-2A-5 Middle Tier REMIC Interest and the Class MTR-2-A-3 (1) (3) 2-A-3 MT-3-A-1A-6 Middle Tier REMIC Interest at a per annum rate equal to 0.25%.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. In addition, each Class C Interest (other than the Class C-3 Interest) shall be entitled to receive the Prepayment Premiums for the related Pool that were received with respect to the preceding Prepayment Period. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: (1) (2) portion of the Trust Fund related to the Aggregate Pool created hereunder and the Exchangeable Certificates. Class 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 A-1 (1) (3) $47,750,200.00 $100,000.00 Class 1-A-1M (2) (4) $47,750,200.00 $100,000.00 Class 1-A-1S (2) (5) $47,750,200.00* $100,000.00 Class 1-A-2 (3) $2,217,900.00 $100,000.00 Class 2-A-1 MT-2(1) (6) $199,858,000.00 $100,000.00 Class 2-A-2 (1) (36) $26,565,000.00 $100,000.00 Class 2-A-2, 2-A-4 MT-2-A-3 (1) (6) $88,151,500.00 $100,000.00 Class 2-A-3M (2) (7) $88,151,500.00 $100,000.00 Class 2-A-3S (2) (8) $88,151,500.00* $100,000.00 Class 2-A-3L (2) (9) $88,151,500.00 $100,000.00 Class 2-A-3F (2) (10) $88,151,500.00* $100,000.00 Class 2-A-4 (6) $20,097,800.00 $100,000.00 Class 2-A-5 (1) (6) $314,574,500.00 $100,000.00 Class 2-A-5M (2) (7) $314,574,500.00 $100,000.00 Class 2-A-5S (2) (8) $314,574,500.00* $100,000.00 Class 3-A-1 (1) (11) $169,925,800.00 $100,000.00 Class 3-A-2 (1) (11) $39,840,100.00 $100,000.00 Class 3-A-3 (1) (11) $82,164,600.00 $100,000.00 Class 3-A-3M (2) (12) $82,164,600.00 $100,000.00 Class 3-A-3S (2) (13) $82,164,600.00* $100,000.00 Class 3-A-3L (2) (14) $82,164,600.00 $100,000.00 Class 3-A-3F (2) (15) $82,164,600.00* $100,000.00 Class 3-A-4 (11) $18,651,100.00 $100,000.00 Class 3-A-5 (2) (11) $291,930,500.00 $100,000.00 Class 4-A-1 (1) (16) $208,462,500.00 $100,000.00 Class 4-A-1M (2) (17) $208,462,500.00 $100,000.00 Class 4-A-1S (2) (18) $208,462,500.00* $100,000.00 Class 4-A-2 (1) (16) $68,576,500.00 $100,000.00 Class 4-A-2M (2) (17) $68,576,500.00 $100,000.00 Class 4-A-2S (2) (18) $68,576,500.00* $100,000.00 Class 4-A-2L (2) (19) $68,576,500.00 $100,000.00 Class 4-A-2F (2) (20) $68,576,500.00* $100,000.00 Class 4-A-3 (16) $17,699,700.00 $100,000.00 Class 4-A-4 (2) (16) $277,039,000.00 $100,000.00 Class 4-A-4M (2) (17) $277,039,000.00 $100,000.00 Class 4-A-4S (2) (18) $277,039,000.00 $100,000.00 Class B-1 (21) $25,848,100.00 $100,000.00 Class B-2 (21) $6,720,300.00 $100,000.00 Class B-3 (21) $3,101,700.00 $100,000.00 Class B-4 (21) $3,618,600.00 $100,000.00 Class B-5 (21) $2,067,800.00 $100,000.00 Class B-6 (21) $2,584,972.55 $100,000.00 Class A-R (3) $100.00 100% Class P (22) $100.00 100% _______________ *Notional Amount. (1) This class shall be issued in uncertificated form and shall constitute an Uncertificated REMIC Interest. Each Class of Exchangeable REMIC Certificates issued under the Trust Agreement will be entitled to the same distributions of principal and interest as the corresponding Uncertificated REMIC Interest. (2-A-3 MT-3) These Certificates are Exchangeable Certificates which will not be issued under this Agreement. The Exchangeable Certificates are issued under the Trust Agreement. (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R Certificates will equal the Pool 1 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenInterests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Tax Net WACRate Cap, then Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Tax Net WACRate Cap, then Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Tax Net WACRate Cap. With respect to each Mortgage PoolCorresponding Loan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the corresponding Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Interests of the other Mortgage PoolsCorresponding Loan Groups, the aggregate Class A and Class B Interests of which are less than one percent 1% of the Pool Subordinated AmountSubordinate Portion of such Loan Groups. If the Mortgage Pool of a Loan Group corresponding to the Class C Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Component) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Component) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-following table specifies the class designation, interest rate, and principal amount for each class of Middle Tier REMIC (REMIC 2) The Middle-Interests: ------------------------------- -------------------------- ---------------------------- ---------------------------- Middle Tier REMIC Regular Interests will have the initial Class Interest Initial Principal Amounts, passBalance Interest Rate Corresponding Master REMIC Certificate ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-through rates and Corresponding Certificate Classes as set forth in the following table: (A-1 $46,428,750.00 5.50% 1) (2) -A-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-2 $446,987,000.00 5.50% 1-A-2 MT-AR (and 1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-4 $140,597,250.00 5.50% 1-A-4 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-5 $65,349,000.00 5.50% 1-A-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-6 $25,000,000.00 5.50% 1-A-6 and 1-A-7 (2) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-8 $506,249,850.00 5.50% 1-A-8 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-9 $8,752,750.00 5.50% 1-A-9 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-10 $216,965,000.00 5.50% 1-A-10 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-11 $3,820,000.00 5.50% 1-A-11 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-X (3) (4) 1-X ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-1 $66,900,000.00 5.75% 2-A-1 and 2-A-2 (5) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-3 $1,000,000.00 5.75% 2-A-3 MT-3------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-1A-4 $49,490,000.00 5.75% 2-A-4 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-5 $30,100,000.00 5.75% 2-A-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-6 $50,000,000.00 5.75% 2-A-6, 2-A-8 (6) and 2-A-14 (7) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-7 $15,000,000.00 5.75% 2-A-7, 2-A-8 (6) and 2-A-14 (7) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-9 $22,640,000.00 5.75% 2-A-9 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-10 $132,058,500.00 6.00% 2-A-10 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-11 $132,058,500.00 5.50% 2-A-11 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-12 $11,680,000.00 5.75% 2-A-12 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-13 $101,040,900.00 5.75% 2-A-13 and 2-A-8 (6) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-15 $10,000,000.00 5.75% 2-A-15 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-16 $4,500,000.00 5.75% 2-A-16 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-17 $1,639,975.00 5.75% 2-A-17 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-X (3) (8) 2-X ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-$100 $100 5.50% A-R ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-PO (9) (10) PO ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-M $43,679,000.00 (11) M ------------------------------- -------------------------- ---------------------------- ---------------------------- ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-1 $16,379,000.00 (11) B-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-2 $13,103,000.00 (11) B-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-3 $7,644,000.00 (11) B-3 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-4 $6,552,000.00 (11) B-4 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-5 $5,460,008.89 (11) B-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-A-R (12) (12) N/A ------------------------------- -------------------------- ---------------------------- ---------------------------- (1) For each Distribution Date, the Class 1-A-3 Certificates are entitled to a specified portion of the interest payable on the Class MTR-1-A-2 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-3 Certificates are entitled to the interest payable on the Class MTR-1-A-2 Middle Tier REMIC Interest at a per annum rate equal to 5.10% minus LIBOR, but not less than 0.00%. (2) For each Distribution Date, the Class 1-A-7 Certificates are entitled to a specified portion of the interest payable on the Class MTR-1-A-6 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-7 Certificates are entitled to the interest payable on the Class MTR-1-A-6 Middle Tier REMIC Interest at a per annum rate equal to 4.80% minus LIBOR, but not less than 0.00%. (3) This Class of Middle Tier REMIC Interest pays no principal. (4) For each Distribution Date, the Class MTR-1-X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-X-1 Lower Tier REMIC Interest. (5) For each Distribution Date, the Class 2-A-2 Certificates are entitled to a specified portion of the interest payable on the Class MTR-2-A-1 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 2-A-2 Certificates are entitled to the interest payable on the Class MTR-2-A-1 Middle Tier REMIC Interest at a per annum rate equal to 5.05% minus LIBOR, but not less than 0.00%.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Pool II Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier II REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier II REMIC as a reimbursement for prior Realized Losses. THE CERTIFICATES AND THE UPPER-TIER REMIC The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: Trust Fund created hereunder. Minimum Certificate Initial Class Denominations or Class Designation Interest Rate Principal Amount Percentage Interest ----------------- ------------- ---------------- ------------------- Class 1-A-1 (1) $ 182,151,800 $ 25,000.00 Class 2-A-1 (2) 1$ 44,601,100 $ 25,000.00 Class 3-A-1 (3) $ 25,000,000 $ 25,000.00 Class 3-A-2 MT(3) $ 41,305,600 $ 25,000.00 Class 3-AR A-3 (1) 3) $ 22,207,100 $ 25,000.00 Class 4-A-1 (24) $ 58,752,400 $ 25,000.00 Class 4-A-2 (4) $ 2,005,000 $ 25,000.00 Class S-F-1 (5) $ 11,415,500 $ 25,000.00 Class S-F-2 (6) $ 87,901,300 $ 25,000.00 Class S-F-3 (7) $ 112,490,000 $ 25,000.00 Class A-R MT-2-A-1 (1) $ 100 100% Class I-B-1 (38) $ 5,249,500 $ 25,000.00 Class I-B-2 (8) $ 3,110,800 $ 25,000.00 Class I-B-3 (8) $ 1,360,900 $ 25,000.00 Class I-B-4 (8) $ 1,166,500 $ 100,000.00 Class I-B-5 (8) $ 777,700 $ 100,000.00 Class I-B-6 (8) $ 1,167,101 $ 100,000.00 Class S-B-1 (9) 2$ 3,619,600 $ 25,000.00 Class S-A-1 MT-2B-2 (9) $ 1,535,600 $ 25,000.00 Class S-A-2 B-3 (19) $ 767,800 $ 25,000.00 Class S-B-4 (39) 2$ 767,800 $ 100,000.00 Class S-A-2, 2B-5 (9) $ 329,000 $ 100,000.00 Class S-A-4 MT-2-A-3 B-6 (19) (3) 2-A-3 MT-3-A-1$ 548,725 $ 100,000.00

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Subordinate Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. In addition, on each Distribution Date, each Class C Interest will be entitled to receive all Prepayment Premiums received with respect to the related Mortgage Pool for the preceding Prepayment Period. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table:portion of the Trust Fund related to the Aggregate Pool created hereunder and the Exchangeable Certificates. Class 1-A-1 (3) $243,899,100 $100,000.00 Class 1-A-2 (3) $11,267,100 $100,000.00 Class 2-A-1 (4) $137,889,500 $100,000.00 Class 2-A-2 (4) $32,718,800 $100,000.00 Class 2-A-3(1) (4) $67,268,500 $100,000.00 Class 2-A-3M(2) (5) $67,268,500 $100,000.00 Class 2-A-3S(2) (6) $67,268,500* $100,000.00 Class 2-A-3L(2) (7) $67,268,500 $100,000.00 Class 2-A-3F(2) (8) $67,268,500* $100,000.00 Class 2-A-4 (4) $10,988,900 $100,000.00 Class 3-A-1(2) (9) $242,554,600 $100,000.00 Class 3-A-2 (9) $11,205,000 $100,000.00 Class 3-A-3(1) (9) $182,134,800 $100,000.00 Class 3-A-4(1) (9) $60,419,800 $100,000.00 Class 3-A-4M(2) (10) $60,419,800 $100,000.00 Class 3-A-4S(2) (11) $60,419,800* $100,000.00 Class B-1 (12) $13,778,000 $100,000.00 Class B-2 (12) $5,511,000 $100,000.00 Class B-3 (12) $3,149,000 $100,000.00 Class B-4 (12) $3,149,000 $100,000.00 Class B-5 (12) $1,969,000 $100,000.00 Class B-6 (12) $1,968,524 $100,000.00 Class A-R (3) $100.00 100% Class P N/A $100(14) 100% _______________ *Class Notional Amount. (1) (2) 1-A-2 MT-AR (1)This class shall be issued in uncertificated form and shall constitute an Uncertificated REMIC Interest. (2) These Certificates are Exchangeable Certificates which will not be issued under this Agreement. The Exchangeable Certificates are issued under the Trust Agreement. (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 1 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool II Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a reimbursement for prior Realized Losses. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: Trust Fund created hereunder. Class 1-A-1 (1) (2) $152,938,700 $ 100,000.00 Class 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2$20,654,400 $ 100,000.00 Class 1-A-3 (1) $68,250,100 $ 100,000.00 Class 1-A-4 (1) $9,683,800 $ 100,000.00 Class 2-A-1 (2) $500,131,400 $ 100,000.00 Class 2-A-2 (2) $50,000,000 $ 100,000.00 Class 2-A-3 (2) $5,000,000 $ 100,000.00 Class 2-A-4 (2) $110,246,900 $ 100,000.00 Class 2-A-5 (2) $26,642,900 $ 100,000.00 Class 3-A-1 (3) $151,190,300 $ 100,000.00 Class 3-A-2 (3) $132,325,300 $ 100,000.00 Class 3-A-3 (3) $40,399,000 $ 100,000.00 Class 3-A-4 (3) $12,970,100 $ 100,000.00 Class 4-A-1 (4) $576,802,300 $ 100,000.00 Class 4-A-2 (4) $17,839,300 $ 100,000.00 Class 5-A-1 (5) $200,000,000 $ 100,000.00 Class 5-A-2 (5) $15,053,800 $ 100,000.00 Class 5-A-3 (5) $428,021,400 $ 100,000.00 Class 5-A-4 (5) $19,889,000 $ 100,000.00 Class A-R (1) $100 100% Class I-B-1 (6) $30,629,400 $ 100,000.00 Class I-B-2 (6) $7,990,200 $ 100,000.00 Class I-B-3 (6) $5,326,800 $ 100,000.00 Class I-B-4 (6) $2,663,400 $ 100,000.00 Class I-B-5 (6) $1,997,500 $ 100,000.00 Class I-B-6 (6) $2,663,521 $ 100,000.00 Class II-B-1 (7) $5,081,300 $ 100,000.00 Class II-B-2 (7) $2,540,600 $ 100,000.00 Class II-B-3 (7) $1,905,400 $ 100,000.00 Class II-B-4 (7) $1,270,300 $ 100,000.00 Class II-B-5 (7) $1,270,300 $ 100,000.00 Class II-B-6 (7) $635,308 $ 100,000.00 Class P (8) $100 100% (1) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2, Class 1-A-3, Class 1-A-4 and Class A-R Certificates will equal the Pool 1 Net WAC. (2) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-3 MT-3A-1, Class 2-A-2, Class 2-A-3, Class 2-A-4 and Class 2-A-5 Certificates will equal the Pool 2 Net WAC. (3) The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1, Class 3-A-2, Class 3-A-3 and Class 3-A-4 Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Certificates) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Certificates), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesClass C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Certificates) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to be distributed on the Distribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Certificates) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middle-following table specifies the class designation, interest rate, and principal amount for each class of Middle Tier REMIC (REMIC 2) The Middle-Interests: ------------------------------- -------------------------- ---------------------------- ---------------------------- Middle Tier REMIC Regular Interests will have the initial Class Initial Principal Amounts, passInterest Rate Corresponding Interest Balance Master REMIC Certificate ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) A-1 $30,000,000.00 6.25% 1-A-2 MT-AR (A-1 and 1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-3 $38,600,000.00 6.25% 1-A-3 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-4 $3,438,000.00 6.25% 1-A-4 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-5 $8,697,000.00 6.25% 1-A-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-A-6 $2,029,000.00 6.25% 1-A-6 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-X (2) (3) 1-X ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-1 $99,980,000.00 6.00% 2-A-2A-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-2 $47,272,000.00 6.00% 2-A-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-3 $25,700,000.00 6.00% 2-A-3, 2-A-4 MT-2(4) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-3 A-5 $8,928,000.00 6.00% 2-A-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-6 $40,000,000.00 6.00% 2-A-6, 2-A-4 (4) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-7 $900,000.00 6.00% 2-A-7 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-8 $36,000,000.00 6.00% 2-A-8 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-9 $18,090,000.00 6.00% 2-A-9 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-10 $5,000,000.00 6.00% 2-A-10 and 2-A-11 (5) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-11 $20,000,000.00 6.00% 2-A-10 and 2-A-11 (5) ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-12 $300,000.00 6.00% 2-A-12 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-A-13 $26,133,000.00 6.00% 2-A-13 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-2-X (2) (6) 2-X ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-1-$100 $100 6.25% A-R ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-PO-1 (7) (8) PO-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-PO-2 (7) (8) PO-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-M $10,173,500.00 (9) M ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-1 $3,463,500.00 (9) B-1 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-2 $2,164,500.00 (9) B-2 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-3 $1,948,500.00 (9) B-3 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-4 $1,515,500.00 (9) B-4 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-B-5 $1,299,600.00 (9) B-5 ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-P $100.00 (10) P ------------------------------- -------------------------- ---------------------------- ---------------------------- MTR-A-R (11) (11) N/A ------------------------------- -------------------------- ---------------------------- ---------------------------- (1) For each Distribution Date, the Class 1-A-2 Certificates are entitled to a portion of the interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 1-A-2 Certificates are entitled to the interest payable on the Class MTR-1-A-1 Middle Tier REMIC Interest at a per annum rate equal to 5.45% minus LIBOR, but not less than 0.00%. (2) This Class of Middle Tier REMIC Interest pays no principal. (3) For each Distribution Date, the Class MTR-1-X Middle Tier REMIC Interest is entitled to all the interest payable with respect to the Class LTR-X-1 Lower Tier REMIC Interest. (4) For each Distribution Date, the Class 2-A-4 Certificates are entitled to a portion of the interest payable on the Class MTR-2-A-3 MT-3Middle Tier REMIC Interest and the Class MTR-2-A-1A-6 Middle Tier REMIC Interest. Specifically, for each Distribution Date, the Class 2-A-4 Certificates are entitled to the interest payable on the MTR-2-A-3 Middle Tier REMIC Interest and the Class MTR-2-A-6 Middle Tier REMIC Interest at a per annum rate equal to 5.30% minus LIBOR, but not less than 0.00%. (5) For each Distribution Date on which LIBOR is less than or equal to 7.25%, the Class 2-A-10 Certificates are not entitled to any of the interest payable on the Class MTR-2-A-10 Middle Tier REMIC Interest and the Class MTR-2-A-11 Middle Tier REMIC Interest and the Class 2-A-11 Certificates are entitled to all of the interest payable on the Class MTR-2-A-10 Middle Tier REMIC Interest and the Class MTR-2-A-11 Middle Tier REMIC Interest. For each Distribution Date on which LIBOR is greater than 7.25%, the Class 2-A-10 Certificates are entitled to all of the interest payable on the Class MTR-2-A-10 Middle Tier REMIC Interest and the Class MTR-2-A-11 Middle Tier REMIC Interest and the Class 2-A-11 Certificates are not entitled to any of the interest payable on the Class MTR-2-A-10 Middle Tier REMIC Interest and the Class MTR-2-A-11 Middle Tier REMIC Interest.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool I Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Subordinate Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Mortgage Pool A-1 (0.9% of SP Group 7) (1) (2) 1-A-2 MT-AR 7 B-1 (0.1% of SP Group 7) (1) ) (2) 7 C-1 (Excess of Group 7) (1) (2) 7 A-2 (0.9% of SP Group 8) (1) (2) 8 B-2 (0.1% of SP Group 8) (1) (2) 8 C-2 (Excess of Group 8) (1) (2) 8 A-3 (0.9% of SP Group 9) (1) (2) 9 B-3 (0.1% of SP Group 9) (1) (2) 9 C-3 (Excess of Group 9) (1) (2) 9 A-4 (0.9% of SP Group 10) (1) (2) 10 B-4 (0.1% of SP Group 10) (1) (2) 10 C-4 (Excess of Group 10) (1) (2) 10 LT2-A-R (3) (3) A-R MT-2-A-1 _______________ (1) Each Class A Interest shall have a principal balance initially equal to 0.9% of the Pool Subordinate Amount (3“SP”) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1of its corresponding Mortgage Pool. Each Class B Interest shall have a principal balance initially equal to 0.1% of the Pool Subordinate Amount of its corresponding Mortgage Pool. The initial principal balance of each Class C Interest shall equal the excess of the initial aggregate principal balance of its corresponding Mortgage Pool over the initial aggregate principal balances of the Class A and Class B Interests corresponding to such Mortgage Pool.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Trust Fund created hereunder.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool A Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool A Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Class P Prepayment Premiums with respect to each Mortgage Pool in Aggregate Pool A on such Distribution Date to the Lower-Tier REMIC 2 Regular Interest with the letter “C” in its designation that corresponds to such Mortgage Pool. The following table sets forth (or describes) the Class designation, Certificate Interest Rate, initial Class Principal Amount and minimum denomination for each Class of Certificates comprising interests in the Trust Fund created hereunder other than the Exchangeable Certificates. Class 1-1-A1 (1) $369,061,000.00 $ 100,000.00 Class 1-1-A2 (1) $41,007,000.00 $ 100,000.00 Class 1-2-A1 (1) $325,000,000.00 $ 100,000.00 Class 1-2-A2 (1) $140,680,000.00 $ 100,000.00 Class 1-2-A3 (1) $60,684,000.00 $ 100,000.00 Class 1-2-A4 (1) $74,062,000.00 $ 100,000.00 Class 1-2-A5 (1) $72,269,000.00 $ 100,000.00 Class 1-2-A6 (1) $50,000,000.00 $ 100,000.00 Class 1-M-1 (1) $19,280,000.00 $ 100,000.00 Class 1-M-2 (1) $10,244,000.00 $ 100,000.00 Class 1-M-3 (1) $6,627,000.00 $ 100,000.00 Class 1-M-4 (1) $4,218,000.00 $ 100,000.00 Class 1-M-5 (1) $4,218,000.00 $ 100,000.00 Class 1-M-6 (1) $4,218,000.00 $ 100,000.00 Class 1-B-1 (1) $6,026,000.00 $ 100,000.00 Class 1-B-2 (1) $7,230,000.00 $ 100,000.00 Class 2-A-1 (2) (3) $66,699,000.00 $ 100,000.00 Class 2-A-1A(4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1B (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1C (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1D (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1E (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1F (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1G (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1H (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-1I (4) (5) $66,699,000.00 $ 100,000.00 Class 2-A-1J (4) (6) $66,699,000.00* $ 100,000.00 Class 2-A-2 (3) $4,069,000.00 $ 100,000.00 Class 3-A-1 (2) (8) $56,460,000.00 $ 100,000.00 Class 3-A-1A (4) (9) $56,460,000.00 $ 100,000.00 Class 3-A-1B (4) (10) $56,460,000.00* $ 100,000.00 Class 3-A-1C (4) (9) $56,460,000.00 $ 100,000.00 Class 3-A-1D (4) (10) $56,460,000.00* $ 100,000.00 Class 3-A-1E (4) (9) $56,460,000.00 $ 100,000.00 Class 3-A-1F (4) (10) $56,460,000.00* $100,000.00 Class 3-A-1G (4) (9) $56,460,000.00 $100,000.00 Class 3-A-1H (4) (10) $56,460,000.00* $100,000.00 Class 3-A-1I (4) (9) $56,460,000.00 $100,000.00 Class 3-A-1J (4) (10) $56,460,000.00* $100,000.00 Class 3-A-2 (8) $3,445,000.00 $ 100,000.00 Class 4-A-1 (2) (11) $65,031,000.00 $ 100,000.00 Class 4-A-1A (4) (12) $65,031,000.00 $ 100,000.00 Class 4-A-1B (4) (13) $65,031,000.00* $ 100,000.00 Class 4-A-1C (4) (12) $65,031,000.00 $ 100,000.00 Class 4-A-1D (4) (13) $65,031,000.00* $ 100,000.00 Class 4-A-1E (4) (12) $65,031,000.00 $ 100,000.00 Class 4-A-1F (4) (13) $65,031,000.00* $100,000.00 Class 4-A-1G (4) (12) $65,031,000.00 $100,000.00 Class 4-A-1H (4) (13) $65,031,000.00* $100,000.00 Class 4-A-1I (4) (12) $65,031,000.00 $100,000.00 Class 4-A-1J (4) (13) $65,031,000.00* $100,000.00 Class 4-A-2 (11) $3,967,000.00 $ 100,000.00 Class A-R N.A. $100 $100 Class C-B-1 (14) $4,980,000.00 $ 100,000.00 Class C-B-2 (14) $2,436,000.00 $ 100,000.00 Class C-B-3 (14) $1,377,000.00 $ 100,000.00 Class C-B-4 (14) $1,483,000.00 $ 100,000.00 Class C-B-5 (14) $1,059,000.00 $ 100,000.00 Class C-B-6 (14) $848,289.05 $ 100,000.00 Class 1-CE Interest (15) Notional 100% Class 1-P (16) $100 $100 Class 2-P (17) $100 $100 *Class Notional Amount (1) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-1-A1, Class 1-1-A2, Class 1-2-A1, Class 1-2-A2, Class 1-2-A3, Class 1-2-A4, Class 1-2-A5, Class 1-M-1, Class 1-M-2, Class 1-M-3, Class 1-M-4, Class 1-M-5, Class 1-M-6, Class 1-B-1 and Class 1-B-2 Certificates will equal the least of (a) LIBOR plus the related Pool 1 Certificate Margin, (b) the related Pool 1 Net WAC (adjusted for the actual number of days in the Accrual Period) and (c) 11.50% per annum. The per annum Certificate Interest Rate for the Class 1-1-A1, Class 1-1-A2, Class 1-2-A1, Class 1-2-A2, Class 1-2-A3, Class 1-2-A4, Class 1-2-A5, Class 1-M-1, Class 1-M-2, Class 1-M-3, Class 1-M-4, Class 1-M-5, Class 1-M-6, Class 1-B-1 and Class 1-B-2 Certificates applicable to the Distribution Date in June 2007 will equal 5.500%, 5.650%, 5.520%, 5.420%, 5.510%, 5.600%, 5.600%, 5.640%, 5.670%, 5.750%, 5.920%, 6.120%, 6.520%, 7.320% and 7.320%, respectively. The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-2-A6 Certificates will equal the least of (a) the Federal Funds Rate plus the related Pool 1 Certificate Margin, (b) the related Pool 1 Net WAC (adjusted for the actual number of days in the Accrual Period) and (c) 11.50% per annum. The per annum Certificate Interest Rate for the Class 1-2-A6 Certificates applicable to the Distribution Date in June 2007 will equal 5.420%. For purposes of the REMIC Provisions, the reference to “Pool 1 Net WAC” in clause (b) of the preceding sentence shall be deemed to be a reference to the Middle-Tier REMIC (REMIC 2) The 1 Net WAC Rate. For any Distribution Date on which the Certificate Interest Rate for each of these Classes of Certificates is based on the Pool 1 Net WAC, the amount of interest that would have been payable on such Certificates if the Middle-Tier REMIC Regular Interests will have 1 Net WAC Rate were substituted for the initial Class Principal Amounts, pass-through rates Pool 1 Net WAC over the amount actually payable thereon shall be treated as having been paid to the owners of such Certificates and Corresponding Certificate Classes as set forth in then deposited by such owners into the following table: (1Supplemental Interest Trust pursuant to Section 10.01(k) (2) 1-A-2 MT-AR (1)hereof. (2) A-R MT-2-A-1This class shall be issued in uncertificated form and shall constitute an Uncertificated REMIC Interest. Each Class of Exchangeable REMIC Certificates will be entitled to the same distributions of principal and interest as the corresponding Uncertificated REMIC Interest. (1) (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-A-1 MT-2and Class 2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 2 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A “LTR-A” and Class B Interests of a Mortgage Pool then“LTR-B” Lower Tier REMIC Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests is less than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class A “LTR-A” Lower Tier REMIC Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B “LTR-B” Lower Tier REMIC Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are Losses incurred during such Due Period is insufficient to make the necessary reductions of principal on the Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s “LTR-C” Lower Tier REMIC Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests for all Mortgage Pools both Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Stated Principal Amounts Balances of all the Mortgage Pools Loans in both Loan Groups as of the end of any Due Period (reduced by Principal Prepayments received after the Due Period that are to be distributed on the Distribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools both Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Class C Loan Group’s “LTR-C” Lower Tier REMIC Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C “LTR-C” Lower Tier REMIC Interests of the other Mortgage Pools, Loan Groups the aggregate Class A “LTR-A” and Class B “LTR-B” Lower Tier REMIC Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Class C Loan Group corresponding to the “LTR-C” Lower Tier REMIC Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate below the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C “LTR-C” Lower Tier REMIC Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate above the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. Set forth below are designations of Classes or Components of Certificates to the categories used in this Agreement: Accretion Directed Certificates None. Accrual Certificates None. Accrual Components None. Book-Entry Certificates. All Classes of Certificates other than the Physical Certificates. COFI Certificates. None. Component Certificates None. Components None. Delay Certificates. All interest-bearing Classes of Certificates other than the Non-Delay Certificates, if any. Depositable Certificates Class 1-A-1 Certificates. ERISA-RestrictedCertificates. The MiddleResidual Certificates and the Private Certificates; and any Certificate that does not have or no longer has a rating of at least BBB- or its equivalent from at least one Rating Agency. Exchangeable Certificates Class 1-Tier REMIC (REMIC 2) The MiddleA-3, Class 1-Tier REMIC Regular Interests will have the initial A-3X, Class Principal Amounts1-A-4, passClass 1-through rates A-4X, Class 1-A-5, Class 1-A-6, Class 1-A-7, Class 1-A-8, Class 1-A-9, Class 1-A-10, Class 1-A-11 and Corresponding Certificate Classes as set forth in the following table: (Class 1) (2) -A-12, Certificates Group 1Senior Certificates Class 1-A-1, Class 1-A-2 MT-AR (1) (2) and Class A-R MT-2-A-1 (1) (3) Certificates. Group 2 Senior Certificates Class 2-A-1 MT-2and Class 2-A-2 (Certificates. LIBOR Certificates None. Non-Delay Certificates None. Notional Amount Certificates. Class 1) (3) -A-3X and Class 1-A-4X Certificates. Notional Components None. Offered Certificates All Classes of Certificates other than the Private Certificates. Physical Certificates Private Certificates and the Residual Certificates. Planned Principal Classes None. Planned Principal Components None. Private Certificates.. Class B-3, Class B-4, Class B-5, Class 1-P and Class 2-A-2P Certificates. Rating Agencies. S&P and Fitch. Regular Certificates All Classes of Certificates, 2other than the Residual Certificates. Residual Certificates Class A-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1R Certificates. Senior Certificate Group Group 1 Senior Certificates and Group 2 Senior Certificates, as applicable. Senior Certificates Group 1 Senior Certificates and Group 2 Senior Certificates. Subordinated Certificates Class M, Class B-1, Class B-2, Class B-3, Class B-4 and Class B-5 Certificates. Underwriter UBS Securities LLC. With respect to any of the foregoing designations as to which the corresponding reference is “None,” all defined terms and provisions in this Agreement relating solely to such designations shall be of no force or effect, and any calculations in this Agreement incorporating references to such designations shall be interpreted without reference to such designations and amounts. Defined terms and provisions in this Agreement relating to statistical rating agencies not designated above as Rating Agencies shall be of no force or effect.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from each such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from each such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage PoolsPool, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool Loan Group then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Pass-Through Rate for the Subordinate Net WACCertificates for the following Distribution Date, Principal Relocation Payments will shall be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from such Mortgage PoolLoan Group; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Pass-Through Rate for the Subordinate Net WACCertificates for the following Distribution Date, Principal Relocation Payments will shall be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will shall be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Pass-Through Rate for the Subordinate Net WACCertificates for the following Distribution Date. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during Available Funds for the Due Period Distribution Date and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will shall be added to the Mortgage Pool's Loan Group’s other Interests interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will Loan Groups shall not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups as of the end of any Due the related Prepayment Period over (ii) the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will Loan Group shall be paid to the Class C Interests of the other Mortgage PoolsLoan Groups, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Group Subordinate Amount. If the Mortgage Pool Loan Group of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will shall be treated by the Lower-Tier Subsidiary REMIC as a Realized Loss. Conversely, if the Mortgage Pool Loan Group of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will shall be treated by the Lower-Tier Subsidiary REMIC as a reimbursement for prior Realized Losses. The Middlefollowing table sets forth characteristics of the Certificates, together with the minimum denominations and integral multiples in excess thereof in which such Classes shall be issuable (except that one Certificate of each Class of Certificates may be issued in a different amount). Each Certificate, other than the Residual and Class P Certificates, will represent a regular interest in the Master REMIC: Class 1-Tier REMIC A-1 $ 86,587,000 (REMIC 1) $ 25,000 $1 Class 1-A-2 $ 6,517,000 (1) $ 25,000 $1 Class 2-A-1 $ 118,149,000 (2) The Middle$ 25,000 $1 Class 3-Tier REMIC Regular Interests will have the initial A-1 $ 352,665,000 (3) $ 25,000 $1 Class Principal Amounts, pass3-through rates and Corresponding Certificate Classes as set forth in the following table:A-2 $ 13,284,000 (3) $ 25,000 $1 Class 4-A-1 $ 56,260,000 (4) $ 25,000 $1 Class 4-A-2 $ 2,119,000 (4) $ 25,000 $1 Class 5-A-1 $ 80,915,000 (5) $ 25,000 $1 Class 5-A-2 $ 3,048,000 (5) $ 25,000 $1 Class A-LR(9) $ 50 (1) $ 50 N/A Class A-UR(10) $ 50 (1) $ 50 N/A Class B-1 $ 12,676,000 (6) $ 25,000 $1 Class B-2 $ 5,219,000 (6) $ 25,000 $1 Class B-3 $ 2,610,000 (6) $ 25,000 $1 Class B-4 $ 2,237,000 (6) $ 25,000 $1 Class B-5 $ 1,864,000 (6) $ 25,000 $1 Class B-6 $ 1,491,297 (6) $ 25,000 $1 Class P (7) N/A N/A N/A(8) (1) (2) The Pass-Through Rate for the Class 1-A-2 MTA-1, Class 1-AR A-2, Class A-LR and Class A-UR Certificates for each Distribution Date will be a per annum rate equal to the weighted average of the Net Mortgage Rates on the Group 1 Mortgage Loans, weighted on the basis of the respective Scheduled Principal Balances, as of the first day of the related Interest Accrual Period (1after taking into account scheduled payments of principal on that date). (2) AThe Pass-R MT-2Through Rate for the Class 2-A-1A-1 Certificates for each Distribution Date will be a per annum rate equal to the weighted average of the Net Mortgage Rates on the Group 2 Mortgage Loans, weighted on the basis of the respective Scheduled Principal Balances, as of the first day of the related Interest Accrual Period (after taking into account scheduled payments of principal on that date). (1) (3) 2The Pass-Through Rate for the Class 3-A-1 MT-2and Class 3-A-2 Certificates for each Distribution Date will be a per annum rate equal to the weighted average of the Net Mortgage Rates on the Group 3 Mortgage Loans, weighted on the basis of the respective Scheduled Principal Balances, as of the first day of the related Interest Accrual Period (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1after taking into account scheduled payments of principal on that date).

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Subordinate Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table: portion of the Trust Fund related to the Aggregate Pool created hereunder and the Exchangeable Certificates. Class 1-A-1 (3) $174,939,500.00 $100,000.00 Class 1-A-2 (3) $10,690,800.00 $100,000.00 Class 2-A-1 (4) $95,561,000.00 $100,000.00 Class 2-A-2 (4) $22,267,000.00 $100,000.00 Class 2-A-3 (1) (4) $45,990,500.00 $100,000.00 Class 2) 1-A-2 MT-AR (1) A-3M (2) A(5) $45,990,500.00 $100,000.00 Class 2-R MT-2-A-1 A-3S (12) (36) $45,990,500.00* $100,000.00 Class 2-A-3L (2) (7) $45,990,500.00 $100,000.00 Class 2-A-3F (2) (8) $45,990,500.00* $100,000.00 Class 2-A-4 (4) $8,100,900.00 $100,000.00 Class 3-A-1 MT-2(9) $150,000,000.00 $100,000.00 Class 3-A-2 (1) (9) $171,614,900.00 $100,000.00 Class 3) 2-A-2, M (2) (10) $171,614,900.00 $100,000.00 Class 3-A-4 MT-2A-2S (2) (11) $171,614,900.00* $100,000.00 Class 3-A-3 (19) $8,486,500.00 $100,000.00 Class B-1 (12) $17,281,400.00 $100,000.00 Class B-2 (12) $5,040,300.00 $100,000.00 Class B-3 (12) $3,960,200.00 $100,000.00 Class B-4 (12) $2,520,100.00 $100,000.00 Class B-5 (12) $1,800,100.00 $100,000.00 Class B-6 (12) $1,800,504.35 $100,000.00 Class A-R (3) $100.00 100% _______________ *Notional Amount. (1) This class shall be issued in uncertificated form and shall constitute an Uncertificated REMIC Interest. (2-A-3 MT-3) These Certificates are Exchangeable Certificates which will not be issued under this Agreement. The Exchangeable Certificates are issued under the Trust Agreement. (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R Certificates will equal the Pool 1 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenInterests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolCorresponding Loan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period due period and (b) the Realized Lossesrealized losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups as of the end of any Due Period due period (reduced by principal prepayments received after the due period that are to to be distributed on the Disribution Date related to the due period) over (ii) the aggregate Certificate Principal Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the corresponding Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Interests of the other Mortgage PoolsCorresponding Loan Groups, the aggregate Class A and Class B Interests of which are less than one percent 1% of the Pool Subordinated AmountPortion of such Loan Groups. If the Mortgage Pool of a Loan Group corresponding to the Class C Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate below the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate above the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. The Middlefollowing table specifies the class designation, interest rate, and principal amount for each class of Strip REMIC Interest: ST-1-Tier REMIC A $136,150,000.00 (REMIC 1) Class 1-A ST-2-A-1 $80,525,000.00 (2) The MiddleClass 0-Tier REMIC Regular Interests will have the initial X-0 XX-0-X-0 $2,150,000.00 (2) Class Principal Amounts, pass0-through rates and Corresponding Certificate Classes as set forth in the following table:X-0 XX-0-X-0 $182,679,000.00 (3) Class 0-X-0 XX-0-X-0 $4,876,000.00 (3) Class 0-X-0 XX-0-X-0 $115,325,000.00 (4) Class 0-X-0 XX-0-X-0 $3,079,000.00 (4) Class 0-X-0 XX-0-X-0 $54,885,000.00 (5) Class 0-X-0 XX-0-X-0 $1,465,000.00 (5) Class 0-X-0 XX-$00-XX $50.00 (1) Class A-UR ST-B-1 $7,160,000.00 (6) Class B-1 ST-B-2 $2,984,000.00 (6) Class B-2 ST-B-3 $1,790,000.00 (6) Class B-3 ST-B-4 $1,789,000.00 (6) Class B-4 ST-B-5 $895,000.00 (6) Class B-5 ST-B-6 $895,901.64 (6) Class B-6 ST-A-UR (7) (7) N/A _____________________ (1) The interest rate with respect to any Distribution Date (2and the related Interest Accrual Period) 1-A-2 MT-AR (1)for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 1 Mortgage Loans. (2) A-R MT-2-A-1The interest rate with respect to any Distribution Date (and the related Interest Accrual Period) for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 2 Mortgage Loans. (1) (3) 2-A-1 MT-2-A-2 The interest rate with respect to any Distribution Date (1and the related Interest Accrual Period) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 3 Mortgage Loans.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. .. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table:portion of the Trust Fund related to the Aggregate Pool created hereunder and the Exchangeable Certificates. Class 1-A-1 (3) $217,896,000 $ 100,000.00 Class 1-A-2 (3) $19,205,900 $ 100,000.00 Class 2-A-1 (4) $149,538,000 $ 100,000.00 Class 2-A-2 (4) $135,000,000 $ 100,000.00 Class 2-A-3 (4) $8,618,000 $ 100,000.00 Class 2-A-4 (4) $6,289,000 $ 100,000.00 Class 3-A-1 (5) $189,000,000 $ 100,000.00 Class 3-A-2 (5) $432,766,000 $ 100,000.00 Class 3-A-3 (5) $100,000,000 $ 100,000.00 Class 3-A-4 (5) $25,000,000 $ 100,000.00 Class 3-A-5 (5) $11,965,000 $ 100,000.00 Class 4-A-1 (6) $156,384,000 $ 100,000.00 Class 4-A-2 (6) $75,000,000 $ 100,000.00 Class 4-A-3 (6) $4,788,000 $ 100,000.00 Class 4-A-4 (6) $5,067,000 $ 100,000.00 Class 5-A-1 (7) $519,293,000 $ 100,000.00 Class 5-A-2 (7) $215,000,000 $ 100,000.00 Class 5-A-3 (7) $13,724,000 $ 100,000.00 Class 5-A-4 (7) $16,046,000 $ 100,000.00 Class 5-A-5 (7) $200,000,000 $ 100,000.00 Class 5-A-6 (7) $50,000,000 $ 100,000.00 Class 6-A-1(1) (8) $651,901,000 $ 100,000.00 Class 6-A-2 (8) $13,984,000 $ 100,000.00 Class 6-A-3(2) (8) $441,056,000 $ 100,000.00 Class 6-A-4(2) (8) $210,845,000 $ 100,000.00 Class 7-A-1 (9) $130,000,000 $ 100,000.00 Class 7-A-2 (9) $280,513,000 $ 100,000.00 Class 7-A-3(1) (9) $137,143,000 $ 100,000.00 Class 7-A-3M (2) (10) $137,143,000 $ 100,000.00 Class 7-A-3S (2) (11) $137,143,000* $ 100,000.00 Class 7-A-4 (9) $11,748,000 $ 100,000.00 Class B-1 (12) $38,493,000 $ 100,000.00 Class B-2 (12) $15,396,000 $ 100,000.00 Class B-3 (12) $5,773,000 $ 100,000.00 Class B-4 (12) $5,773,000 $ 100,000.00 Class B-5 (12) $3,849,000 $ 100,000.00 Class B-6 (12) $3,850,350 $ 100,000.00 Class A-R (3) $100 100% _______________ *Notional Amount. (1) (2) 1-A-2 MT-AR (1)This class shall be issued in uncertificated form and shall constitute an Uncertificated REMIC Interest. Each Class of Exchangeable REMIC Certificates issued under the Trust Agreement will be entitled to the same distributions of principal and interest as the corresponding Uncertificated REMIC Interest. (2) These Certificates are Exchangeable Certificates which will not be issued under this Agreement. The Exchangeable Certificates are issued under the Trust Agreement. (3) The per annum Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 1-A-1, Class 1-A-2 and Class A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 1 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Pool I Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier I REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier I REMIC as a reimbursement for prior Realized Losses. The MiddleLower-Tier II REMIC (REMIC 2) The MiddleLower-Tier II REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : ----------------------------------------- ------------------- -------------------- ---------------------- Lower-Tier I REMIC Interests Initial Pass-Through Corresponding Principal Rate Mortgage Pool Amount ----------------------------------------- ------------------- -------------------- ---------------------- A-5 (0.9% of SP Group 5) (1) (2) 1-A-2 MT-AR 5 ----------------------------------------- ------------------- -------------------- ---------------------- B-5 (0.1% of SP Group 5) (1)) (2) 5 ----------------------------------------- ------------------- -------------------- ---------------------- C-5 (Excess of Group 5) (1) (2) 5 ----------------------------------------- ------------------- -------------------- ---------------------- A-6 (0.9% of SP Group 6) (1) (2) 6 ----------------------------------------- ------------------- -------------------- ---------------------- B-6 (0.1% of SP Group 6) (1) (2) 6 ----------------------------------------- ------------------- -------------------- ---------------------- C-6 (Excess of Group 6) (1) (2) 6 ----------------------------------------- ------------------- -------------------- ---------------------- A-7 (0.9% of SP Group 7) (1) (2) 7 ----------------------------------------- ------------------- -------------------- ---------------------- B-7 (0.1% of SP Group 7) (1) (2) 7 ----------------------------------------- ------------------- -------------------- ---------------------- C-7 (Excess of Group 7) (1) (2) 7 ----------------------------------------- ------------------- -------------------- ---------------------- LT-II-A-R (3) (3) N/A ----------------------------------------- ------------------- -------------------- ---------------------- (1) Each Class A Interest will have a principal balance initially equal to 0.9% of the Pool Subordinated Amount ("SP") of its corresponding Mortgage Pool. Each Class B Interest will have a principal balance initially equal to 0.1% of the Pool Subordinated Amount of its corresponding Mortgage Pool. The initial principal balance of each Class C Interest will equal the excess of the initial aggregate principal balance of its corresponding Mortgage Pool over the initial aggregate principal balances of the Class A and Class B Interests corresponding to such Mortgage Pool. (2) A Rate equal to the weighted average of the Net Mortgage Rates of the Mortgage Loans of the corresponding Mortgage Pool. (3) The Class LT-II-A-R MT-2Interest is the sole class of residual interest in the Lower-A-1 (1) (3) 2Tier II REMIC. It has no principal balance and pays no principal or interest. On each Distribution Date, the Available Funds from Mortgage Pools 5, 6 and 7 shall be distributed with respect to their corresponding Lower-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Tier II REMIC Interests in the following manner:

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the related Class PO Component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the related Class PO Component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Tracking Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the related Class PO Component) as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the related Class PO Component) will be paid to the Class C Tracking Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier Sub WAC REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier Sub WAC REMIC as a reimbursement for prior Realized Losses. The Middleforegoing REMIC structure is intended to cause all of the cash from the Mortgage Loans to flow through to the Master REMIC as cash flow on a REMIC regular interest, without creating any shortfall-Tier actual or potential (other than for credit losses) to any REMIC (REMIC 2) The Middleregular interest. Set forth below are designations of Classes or Components of Certificates and other defined terms to the categories used herein: Accretion Directed Certificates None. Accretion Directed Components None. Accrual Certificates None. Accrual Components None. Book-Tier REMIC Regular Interests will have Entry Certificates All Classes of Certificates other than the initial Physical Certificates. COFI Certificates None. Combined Certificates None. Component Certificates Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1PO Certificates.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenTracking Interests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Tracking Interests is less than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class A Tracking Interests prior to any other Principal Distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests is greater than the Subordinate Net WACPass-Through Rate, Principal Relocation Payments will be made proportionately to the outstanding Class B Tracking Interests prior to any other Principal Distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Tracking Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period (as adjusted for amounts allocated to the Group's PO component) and (b) the Realized LossesLosses (as adjusted for amounts allocated to the Group's PO component), are insufficient to make the necessary reductions of principal on the Class A and Class B Tracking Interests, then interest will be added to the Mortgage PoolLoan Group's other Tracking Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts Balances of all Mortgage Pools Loan Groups (as adjusted for amounts allocated to the Groups' PO components) as of the end of any Due Period over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Tracking Interests of a Mortgage PoolLoan Group, and if the Mortgage PoolLoan Group's Class C Tracking Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group (as adjusted for amounts allocated to the Groups' PO components) will be paid to the Class C Tracking Interests of the other Mortgage PoolsLoan Groups, the aggregate Class A and Class B Tracking Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Tier REMIC Tracking as a Realized Loss. Conversely, if the Mortgage Pool of a Loan Group corresponding to the Class C Tracking Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The MiddleSet forth below are designations of Classes or Components of Certificates and other defined terms to the categories used herein: Accretion Directed Certificates.......None Accretion Directed Components.........None. Accrual Certificates..................None. Accrual Components....................None. Book-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have Entry Certificates...............All Classes of Certificates other than the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Physical Certificates. COFI Certificates.....................None.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Subordinate Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) In addition, on each Distribution Date, each Class C Interest will be entitled to receive all Prepayment Premiums received with respect to the related Mortgage Pool for the preceding Prepayment Period to the extent payable to the Class P Certificates. The Middle-Tier REMIC Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes of Certificates as set forth in the following table: : MT-1-A-1 (1) (27) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2MT-1-A-2 (1) (37) 1-A-2 MT-2-A-1 (2) (7) 2-A-2A-1, 2-A-4 A-3 MT-2-A-2 (2) (7) 2-A-2 MT-3-A-2 (3) (7) 3-A-2 MT-3-A-3 (3) (7) 3-A-3 MT-3-A-4 (3) (7) 3-A-4 MT-3-A-5 (3) (7) 3-A-5 MT-4-A-1 (4) (7) 4-A-1, 4-A-3 MT-4-A-2 (4) (7) 4-A-2 MT-B-1 (5) (7) B-1 MT-B-2 (5) (7) B-2 MT-B-3 (5) (7) B-3 MT-B-4 (5) (7) B-4 MT-B-5 (5) (7) B-5 MT-B-6 (5) (7) B-6 MT-R (1) (7) A-R MT-A-R (6) (6) N/A (1) This Middle-Tier Interest shall bear interest at a per annum rate with respect to any Distribution Date (and the related Accrual Period) equal to the Pool 1 Net WAC. (2) This Middle-Tier Interest shall bear interest at a per annum rate with respect to any Distribution Date (and the related Accrual Period) equal to the Pool 2 Net WAC. (3) 2This Middle-A-3 MT-3-A-1Tier Interest shall bear interest at a per annum rate with respect to any Distribution Date (and the related Accrual Period) equal to the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool I Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool I Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to Mortgage Pool 2 on such Distribution Date to the Class C-2 Interest. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to Mortgage Pool 4 on such Distribution Date to the Class C-4 Interest. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Mortgage Pool B-6 (0.1% of SP Group 6) (1) (2) 1-A-2 MT-AR 6 C-6 (Excess of Group 6) (1)) (2) 6 A-7 (0.9% of SP Group 7) (1) (2) 7 B-7 (0.1% of SP Group 7) (1) (2) 7 C-7 (Excess of Group 7) (1) (2) 7 LT2-A-R (3) (3) N/A _______________ (1) Each Class A Interest shall have a principal balance initially equal to 0.9% of the Pool Subordinate Amount (“SP”) of its corresponding Mortgage Pool. Each Class B Interest shall have a principal balance initially equal to 0.1% of the Pool Subordinate Amount of its corresponding Mortgage Pool. The initial principal balance of each Class C Interest shall equal the excess of the initial aggregate principal balance of its corresponding Mortgage Pool over the initial aggregate principal balances of the Class A and Class B Interests corresponding to such Mortgage Pool. (2) A Rate equal to the weighted average of the Net Mortgage Rates of the Mortgage Loans of the corresponding Mortgage Pool. (3) The Class LT2-A-R MT-2Interest is the sole class of residual interest in Lower-A-1 (1) (3) Tier REMIC 2. It has no principal balance and pays no principal or interest. On each Distribution Date, the Available Funds from each Mortgage Pool in Aggregate Pool II shall be distributed with respect to its corresponding Lower-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Tier REMIC 2 Interests in the following manner:

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenInterests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WACRate Cap for the Subordinated Certificates, then Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WACRate Cap for the Subordinated Certificates, then Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WACRate Cap for the Subordinated Certificates. With respect to each Mortgage PoolCorresponding Loan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Interests for all Mortgage Pools Corresponding Loan Groups will not be reduced below 1 percent 1% of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups as of the end of any Due Period (reduced by principal prepayments received after the Due Period that are to be distributed on the Distribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the corresponding Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Interests of the other Mortgage PoolsCorresponding Loan Group, the aggregate Class A and Class B Interests of which are less than one percent 1% of the Pool Subordinated AmountSubordinate Portion of such Loan Groups. If the Mortgage Pool of a Loan Group corresponding to the Class C Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate below the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Adjusted Net Mortgage Rate above the weighted average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A [ ] and Class B [ ] Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A [ ] and Class B [ ] Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A [ ] Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A [ ] and Class B [ ] Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B [ ] Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A [ ] and Class B [ ] Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A [ ] and Class B [ ] Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A [ ] and Class B [ ] Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A [ ] and Class B [ ] Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C [ ] Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C [ ] Interests of the other Mortgage Pools, the aggregate Class A [ ] and Class B [ ] Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C [ ] Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier [ ] REMIC [ ] as a Realized Loss. Conversely, if the Mortgage Pool of a Class C [ ] Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier [ ] REMIC [ ] as a reimbursement for prior Realized Losses. On each Distribution Date, the Securities Administrator shall be deemed to have distributed the Prepayment Premiums with respect to each Mortgage Pool on such Distribution Date to the Class “[ ]” Interest related to such Mortgage Pool. The Middle-Tier REMIC following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table:portion of the Trust Fund related to the Aggregate Pool created hereunder. Class [ ] (1) $[ ] $ [ ] Class [ ] (2) $[ ] $ [ ] Class [ ] (2) $[ ] $ [ ] Class [ ] (2) $[ ] $ [ ] Class [ ] (2) $[ ] $ [ ] Class [ ] (2) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (3) $[ ] $ [ ] Class [ ] (4) $[ ] $ [ ] Class [ ] (4) $[ ] $ [ ] Class [ ] (5) $[ ] $ [ ] Class [ ] (5) $[ ] $ [ ] Class [ ] (6) $[ ] $ [ ] Class [ ] (6) $[ ] $ [ ] Class [ ] (1) $[ ] [ ]% Class [ ] (7) $[ ] $ [ ] Class [ ] (7) $[ ] $ [ ] Class [ ] (7) $[ ] $ [ ] Class [ ] (7) $[ ] $ [ ] Class [ ] (7) $[ ] $ [ ] Class [ ] (7) $[ ] $ [ ] Class [ ] (8) $[ ] [ ] (1) The Certificate Interest Rate with respect to any Distribution Date (2and the related Accrual Period) 1-A-2 MT-AR (1)for the Class [ ] and Class [ ] Certificates will equal the Pool [ ] Net WAC. (2) A-R MT-2-A-1The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class [ ] Certificates will equal the Pool [ ] Net WAC. (1) (3) 2-A-1 MT-2-A-2 The Certificate Interest Rate with respect to any Distribution Date (1and the related Accrual Period) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1for the Class[ ] Certificates will equal the Pool [ ] Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Pool II Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier II REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier II REMIC as a reimbursement for prior Realized Losses. The MiddleCertificates and the Upper-Tier REMIC The following table sets forth (REMIC 2or describes) The Middle-Tier REMIC Regular Interests will have the Class designation, Certificate Interest Rate, initial Class Principal Amounts, pass-through rates Amount and Corresponding Certificate Classes as set forth minimum denomination for each Class of Certificates comprising interests in the following table:Trust Fund created hereunder. Minimum Class Designation Certificate Initial Class Denominations or Interest Rate Principal Amount Percentage Interest --------------------------- ----------------------- ------------------------ ---------------------------- Class 1-A-1 (1) $ 182,151,800 $ 25,000.00 Class 2-A-1 (2) $ 44,601,100 $ 25,000.00 Class 3-A-1 (3) $ 25,000,000 $ 25,000.00 Class 3-A-2 (3) $ 41,305,600 $ 25,000.00 Class 3-A-3 (3) $ 22,207,100 $ 25,000.00 Class 4-A-1 (4) $ 58,752,400 $ 25,000.00 Class 4-A-2 (4) $ 2,005,000 $ 25,000.00 Class S-F-1 (5) $ 11,415,500 $ 25,000.00 Class S-F-2 (6) $ 87,901,300 $ 25,000.00 Class S-F-3 (7) $ 112,490,000 $ 25,000.00 Class A-R (1) $ 100 100% Class I-B-1 (8) $ 5,249,500 $ 25,000.00 Class I-B-2 (8) $ 3,110,800 $ 25,000.00 Class I-B-3 (8) $ 1,360,900 $ 25,000.00 Class I-B-4 (8) $ 1,166,500 $ 100,000.00 Class I-B-5 (8) $ 777,700 $ 100,000.00 Class I-B-6 (8) $ 1,167,101 $ 100,000.00 Class S-B-1 (9) $ 3,619,600 $ 25,000.00 Class S-B-2 (9) $ 1,535,600 $ 25,000.00 Class S-B-3 (9) $ 767,800 $ 25,000.00 Class S-B-4 (9) $ 767,800 $ 100,000.00 Class S-B-5 (9) $ 329,000 $ 100,000.00 Class S-B-6 (9) $ 548,725 $ 100,000.00 (1) The Certificate Interest Rate with respect to any Distribution Date (2and the related Accrual Period) for the Class 1-A-2 MTA-1 and Class A-AR (1)R Certificates will equal the Pool 1 Net WAC. (2) AThe Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 2-R MT-2-A-1A-1 Certificates will equal the Pool 2 Net WAC. (1) (3) 2The Certificate Interest Rate with respect to any Distribution Date (and the related Accrual Period) for the Class 3-A-1 MT-2A-1, Class 3-A-2 (1) (and Class 3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Certificates will equal the Pool 3 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from each such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from each such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage PoolsPool, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (2) 1-A-2 A-2, 1-A-3 MT-AR A-R (1) ) (2) A-R MT-2-A-1 A-1 (1) (3) 2-A-1 A-1, 2-A-4 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 A-3, 2-A-4 MT-3-A-1A-1 (1)

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from each such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from each such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage PoolsPool, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a the Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middle-Tier REMIC (REMIC 2) The Middle-Tier REMIC Regular Interests will have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes as set forth in the following table: (1) (24) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2MT-3-A-2 (1) (4) 3) 2-A-2, 2A-2 MT-4-A-4 MT-2-A-3 A-1 (1) (5) 4-A-1, 4-A-2 MT-5-A-1 (1) (6) 5-A-1, 5-A-2 MT-B-1 (1) (7) B-1 MT-B-2 (1) (7) B-2 MT-B-3 (1) (7) B-3 MT-B-4 (1) (7) B-4 MT-B-5 (1) (7) B-5 MT-B-6 (1) (7) B-6 R-2 (8) (8) N/A --------------- (1) Each Middle-Tier REMIC Interest will have an initial principal balance equal to the principal balance of its Corresponding Certificates (excluding the Class 4-A-2 and Class 5-A-2 Certificates in the case of the Class MT-4-A-1 Interest and Class MT-5-A-1 Interest, respectively). (2) Pool 1 Net WAC. (3) 2-A-3 MT-3-A-1Pool 2 Net WAC.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenInterests: (a) if If the Calculation Rate in respect of such the outstanding Class A and Class B Interests is less than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions principal distributions from each such Mortgage Pool; andLoan Group. (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolCorresponding Loan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period due period and (b) the Realized Lossesrealized losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts principal balances of all Mortgage Pools Loan Groups as of the end of any Due Period due period (reduced by principal prepayments received after the due period that are to to be distributed on the Disribution Date related to the due period) over (ii) the aggregate Certificate Principal Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the corresponding Class A and Class B Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Interests of the other Mortgage PoolsCorresponding Loan Groups, the aggregate Class A and Class B Interests of which are less than one percent 1% of the Pool Subordinated AmountPortion of such Loan Groups. If the Mortgage Pool of a Loan Group corresponding to the Class C Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate below the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate above the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the LowerSub-Tier WAC REMIC as a reimbursement for prior Realized Losses. The Middlefollowing table specifies the class designation, interest rate, and principal amount for each class of Strip REMIC Interest: ST-1-Tier REMIC A-1 $142,809,000.00 (REMIC 1) Class 0-X-0 XX-0-X-0 $5,564,000.00 (1) Class 0-X-0 XX-0-X-0 $300,027,000.00 (2) The MiddleClass 0-Tier REMIC Regular Interests will have the initial X-0 XX-0-X-0 $11,690,000.00 (2) Class Principal Amounts, pass0-through rates and Corresponding Certificate Classes as set forth in the following table:X-0 XX-0-X-0 $61,944,000.00 (3) Class 0-X-0 XX-0-X-0 $2,414,000.00 (3) Class 3-A-2 ST-4-A $189,182,000.00 (4) Class 4-A ST-$50-UR $50.00 (4) Class A-UR ST-I-B-1 $8,992,000.00 (5) Class I-B-1 ST-I-B-2 $3,814,000.00 (5) Class I-B-2 ST-I-B-3 $2,180,000.00 (5) Class I-B-3 ST-I-B-4 $2,452,000.00 (5) Class I-B-4 ST-I-B-5 $1,907,000.00 (5) Class I-B-5 ST-I-B-6 $1,090,112.00 (5) Class I-B-6 ST-II-B-1 $3,962,000.00 (6) Class II-B-1 ST-II-B-2 $1,584,000.00 (6) Class II-B-2 ST-II-B-3 $991,000.00 (6) Class II-B-3 ST-II-B-4 $1,089,000.00 (6) Class II-B-4 ST-II-B-5 $793,000.00 (6) Class II-B-5 ST-II-B-6 $495,501.00 (6) Class II-B-6 ST-A-UR (7) (7) N/A _____________________ (1) The interest rate with respect to any Distribution Date (2and the related Interest Accrual Period) 1-A-2 MT-AR (1)for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 1 Mortgage Loans. (2) A-R MT-2-A-1The interest rate with respect to any Distribution Date (and the related Interest Accrual Period) for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 2 Mortgage Loans. (1) (3) 2-A-1 MT-2-A-2 The interest rate with respect to any Distribution Date (1and the related Interest Accrual Period) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1for this Strip REMIC Interest is a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 3 Mortgage Loans.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 1 as a reimbursement for prior Realized Losses. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 2 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : Lower-Tier REMIC 2 Interests Initial Principal Amount Pass-Through Rate Corresponding Class of Certificates LT2-1A1 (1) (2) 1-A-1 LT2-1A2 (1) (2) 1-A-2 MTLT2-AR 1A3 (1) ) (2) A1-R MT-2A-3 LT2-A-1 2A1 (1) (3) 2-A-1 MT-2LT2-A-2 2A2 (1) (3) 2-A-2, 2A-2 LT2-A-4 MT-2-A-3 2A3 (1) (3) 2-A-3 MT-3LT2-A-12A4 (1) (3) 2-A-4 LT2-2A5 (1) (3) 2-A-5 LT2-3A1 (1) (4) 3-A-1 LT2-3A2 (1) (4) 3-A-2 LT2-3A3 (6) (4) 3-A-3, 3-A-X LT2-3A4 (1) (4) 3-A-4 LT2-B1 (1) (5) B-1 LT2-B2 (1) (5) B-2 LT2-B3 (1) (5) B-3 LT2-B4 (1) (5) B-4 LT2-B5 (1) (5) B-5 LT2-B6 (1) (5) B-6 LT2-A-R (7) (7) N/A _______________ (1) This Lower-Tier REMIC 2 Interest shall have an initial principal balance equal to the Initial Class Principal Amount of its Corresponding Class of Certificates.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Aggregate Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Aggregate Pool II Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Aggregate Pool II Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Subordinate Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC 2 as a reimbursement for prior Realized Losses. The MiddleLower-Tier REMIC (REMIC 2) The Middle-Tier REMIC 3 Regular Interests will shall have the initial Class Principal Amounts, pass-through rates and Corresponding Certificate Classes Mortgage Pools as set forth in the following table: : REMIC 3 Interests Initial Principal Amount Pass-Through Rate Corresponding Mortgage Pool Pool 11 (1) (2) 111 LT3-A-2 MTA-AR R (1) 3) (23) A-R MT-2-A-1 _______________ (1) (3) 2This Lower-A-1 MT-2Tier Interest shall have an initial principal balance equal to the aggregate Stated Principal Balance of the Mortgage Loans in Pool 11 as of the Cut-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1off Date.

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool then: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if the Calculation Rate in respect of the outstanding Class A and Class B Interests is greater than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class B Interests prior to any other Principal Distributions from such Mortgage Pool. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Interests to equal the Subordinate Net WAC. With respect to each Mortgage Pool, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Interests, then interest will be added to the Mortgage Pool's ’s other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balances. (c) The outstanding aggregate Class A and Class B Interests for all Mortgage Pools will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Principal Amounts of all Mortgage Pools as of the end of any Due Period over (ii) the Senior Certificates for all Mortgage Pools as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Interests of a Mortgage Pool, and if the Mortgage Pool's ’s Class C Interest has already been reduced to zero, then the excess principal from that Mortgage Pool will be paid to the Class C Interests of the other Mortgage Pools, the aggregate Class A and Class B Interests of which are less than one percent of the Pool Subordinated Amount. If the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate below the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a Realized Loss. Conversely, if the Mortgage Pool of a Class C Interest that receives such payment has a weighted average Net Mortgage Rate above the weighted average Net Mortgage Rate of the Mortgage Pool making the payment, then the payment will be treated by the Lower-Tier REMIC as a reimbursement for prior Realized Losses. The Middlefollowing table sets forth (or describes) the Class designation, Certificate Interest Rate, initial Class Principal Amount and minimum denomination for each Class of Certificates comprising interests in the Trust Fund created hereunder. Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] Class [ ] [ ] [ ] [ ] As of the Cut-off Date, the Mortgage Loans had an Aggregate Stated Principal Balance of $[ ] The foregoing REMIC structure is intended to cause all of the cash from the Mortgage Loans to flow through to the Upper-Tier REMIC as cash flow on a REMIC regular interest, without creating any shortfall—actual or potential (other than for credit losses) to any REMIC 2regular interest. To the extent that the structure is believed to diverge from such intention the Securities Administrator will resolve ambiguities to accomplish such result and will to the extent necessary rectify any drafting errors or seek clarification to the structure without Certificateholder approval (but with guidance of Counsel) The Middle-Tier REMIC Regular Interests will have to accomplish such intention. In consideration of the initial Class Principal Amountsmutual agreements herein contained, pass-through rates the Depositor, the Master Servicer, the Securities Administrator and Corresponding Certificate Classes the Trustee hereby agree as set forth in the following tablefollows: (1) (2) 1-A-2 MT-AR (1) (2) A-R MT-2-A-1 (1) (3) 2-A-1 MT-2-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1

Principal if a Cross-Over Situation Exists. If a Cross-Over Situation exists with respect to the Class A and Class B Interests of a Mortgage Pool thenLower Tier REMIC Interests: (a) if the Calculation Rate in respect of such outstanding Class A and Class B Interests is less than the Subordinate Net WAC, Principal Relocation Payments will be made proportionately to the outstanding Class A Interests prior to any other Principal Distributions from such Mortgage Pool; and (b) if If the Calculation Rate in respect of the outstanding Class A and Class B Lower Tier REMIC Interests is greater less than the Subordinate Net WACPass-Through Rate, then Principal Relocation Payments will be made proportionately to the outstanding Class B A Lower Tier REMIC Interests prior to any other principal distributions from each such Loan Group. (b) If the Calculation Rate in respect of the outstanding Class A and Class B Lower Tier REMIC Interests is greater than the Subordinate Pass-Through Rate, Principal Distributions Relocation Payments will be made to the outstanding Class B Lower Tier REMIC Interests prior to any other principal distributions from each such Mortgage PoolLoan Group. In each case, Principal Relocation Payments will be made so as to cause the Calculation Rate in respect of the outstanding Class A and Class B Lower Tier REMIC Interests to equal the Subordinate Net WACPass-Through Rate. With respect to each Mortgage PoolLoan Group, if (and to the extent that) the sum of (a) the principal payments comprising the Principal Remittance Amount received during the Due Period and (b) the Realized Losses, are insufficient to make the necessary reductions of principal on the Class A and Class B Lower Tier REMIC Interests, then interest will be added to the Mortgage Pool's other Interests that are not receiving Principal Relocation Payments, in proportion to their principal balancesLoan Group’s Class C Lower Tier REMIC Interest. (c) The Unless required to achieve the Calculation Rate, the outstanding aggregate Class A and Class B Tracking Interests for all Mortgage Pools Loan Groups will not be reduced below 1 percent of the excess of (i) the aggregate outstanding Class Stated Principal Amounts Balances of the Mortgage Loans in all Mortgage Pools as Loan Groupsas of the end of any Due Period (reduced by Principal Prepayments received after the Due Period that are to to be distributed on the Disribution Date related to the Due Period) over (ii) the aggregate Class Certificate Balance of the Senior Certificates for all Mortgage Pools Loan Groups as of the related Distribution Date (after taking into account distributions of principal on such Distribution Date). If (and to the extent that) the limitation in paragraph (c) prevents the distribution of principal to the Class A and Class B Lower Tier REMIC Interests of a Mortgage PoolLoan Group, and if the Mortgage Pool's Loan Group’s Class C Lower Tier REMIC Interest has already been reduced to zero, then the excess principal from that Mortgage Pool Loan Group will be paid to the Class C Lower Tier REMIC Interests of the other Mortgage Pools, Loan Groups the aggregate Class A and Class B Lower Tier REMIC Interests of which are less than one percent of the Pool Subordinated AmountPortion. If the Mortgage Pool of a Loan Group corresponding to the Class C Lower Tier REMIC Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate below the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a Realized Loss. Conversely, if a Loan Group corresponding to the Mortgage Pool of a Class C Lower Tier REMIC Interest that receives such payment has a weighted average Weighted Average Adjusted Net Mortgage Rate above the weighted average Weighted Average Adjusted Net Mortgage Rate of the Mortgage Pool Loan Group making the payment, then the payment will be treated by the Lower-Lower Tier REMIC as a reimbursement for prior Realized Losses. The Middlefollowing table sets forth characteristics of the Master REMIC Certificates, including the original Class Certificate Balances and Pass-Tier Through Rates, together with minimum denominations and integral multiples in excess thereof in which such Classes shall be issued (except that one Residual Certificate representing the Tax Matters Person Certificate may be issued in a different amount for each class of REMIC Interest): Class 1-A-1 $ 169,186,000 (REMIC 1 ) $ 25,000.00 $ 1.00 Class 1-A-2 $ 18,798,000 (1 ) $ 25,000.00 $ 1.00 Class 2-A-1 $ 42,023,000 (2 ) The Middle$ 25,000.00 $ 1.00 Class 2-Tier REMIC Regular Interests will have the initial A-2 $ 4,669,000 (2 ) $ 25,000.00 $ 1.00 Class Principal Amounts, pass3-through rates and Corresponding Certificate Classes as set forth in the following table:A-1 $ 104,439,000 (3 ) $ 25,000.00 $ 1.00 Class 3-A-2 $ 11,604,000 (3 ) $ 25,000.00 $ 1.00 Class A-R $ 100 (1 ) (4 ) (4 ) Class M $ 6,013,000 (5 ) $ 25,000.00 $ 1.00 Class B-1 $ 2,550,000 (5 ) $ 25,000.00 $ 1.00 Class B-2 $ 1,458,000 (5 ) $ 25,000.00 $ 1.00 Class B-3 $ 2,186,000 (5 ) $ 100,000.00 $ 1.00 Class B-4 $ 729,000 (5 ) $ 100,000.00 $ 1.00 Class B-5 $ 728,759 (5 ) $ 100,000.00 $ 1.00 __________________________________________ (1) (2) 1The Pass-A-2 MTThrough Rate for this Class of Certificates for the Interest Accrual Period for any Distribution Date will be a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 1 Mortgage Loans for that Distribution Date. The Pass-AR (1)Through Rate for this Class of Certificates for the Interest Accrual Period related to the first Distribution Date is 5.9737% per annum. (2) AThe Pass-R MT-2Through Rate for this Class of Certificates for the Interest Accrual Period for any Distribution Date will be a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 2 Mortgage Loans for that Distribution Date. The Pass-A-1Through Rate for this Class of Certificates for the Interest Accrual Period related to the first Distribution Date is 6.0328% per annum. (1) (3) 2The Pass-A-1 MT-2Through Rate for this Class of Certificates for the Interest Accrual Period for any Distribution Date will be a per annum rate equal to the Weighted Average Adjusted Net Mortgage Rate of the Group 3 Mortgage Loans for that Distribution Date. The Pass-A-2 (1) (3) 2-A-2, 2-A-4 MT-2-A-3 (1) (3) 2-A-3 MT-3-A-1Through Rate for this Class of Certificates for the Interest Accrual Period related to the first Distribution Date is 6.2335% per annum.