Common use of Series Designation Clause in Contracts

Series Designation. Series 2000-1. ------------------ Terms of the Series 2000-1 Certificates: Structured Asset Securities Corporation, Series 2000-1 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP, Class AX, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three pools of fixed rate, conventional, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP, Class AX, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCR; the Class B1 and B1X Certificates be rated "AA" by DCR; the Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR.

Series Designation. Series 20002001-113. ------------------ Terms of the Series 20002001-1 13 Certificates: Structured Asset Securities Corporation, Series 20002001-1 13 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-A10, Class 1-A11, Class 1-A12, Class 1-AX, Class 1-AP, Class 2-A1A, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5AX, Class 2-AP, Class 3-A, Class 3-AP, Class AX, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three two pools of fixed rate, conventionalfully amortizing, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-A10, Class 1-A11, Class 1-A12, Class 1-AX, Class 1-AP, Class 2-A1A, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5AX, Class 2-AP, Class 3-A, Class 3-AP, Class AX, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851363602. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Date Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-A10, Class 1-A11, Class 1-A12, Class 1-AX, Class 1-AP, Class 2-A1A, Class 2-A2, AX and Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each Standard & Poor's Ratings Service, a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCRS&P") and be rated "Aaa" by Xxxxx'x Investors Service, Inc. Inc., ("Moody's,Xxxxx'x" and together with DCRS&P, the "Rating Agencies"); the Class R Certificates Certificate be rated "AAA" by DCRS&P; the Class B1 and B1X Certificates be rated "AA" by DCRS&P; the Class B2 and B2X Certificates be rated "A" by DCRS&P; and the Class B3 Certificates be rated "BBB" by DCR.S&P.

Series Designation. Series 20002005-122. ------------------ ------------------- --------------- Terms of the Series 20002005-1 22 Certificates: Structured Asset Securities Corporation, Series 2000-1 Adjustable Rate Mortgage Loan Trust Mortgage Pass-Through Certificates, Series 2005-22, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6AX, Class 1-A7, Class 1-APPAX, Class 2-A1, Class 2-A2, Class 23-A3, Class 2-A4, Class 2-A5, Class 2-APA1, Class 3-AA2, Class 34-APA1, Class AX4-A2, Class 5-A1, Class 5-A2, Class B1, Class B1X-I, Class B2, Class B2X-I, Class B3-I, Class B4-I, Class B5-I, Class B6 B6-I, Class B7-I, Class B8-I, Class B1-II, Class B2-II, Class B3-II, Class B4-II, Class B5-II, Class B6-II, Class B7-II, Class P-I, Class P-II and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund on the Closing Date (as defined below) will consist primarily of three five pools of fixed rate, conventional, first lien, adjustable rate, fully amortizing, residential mortgage loans having a total Scheduled Principal Balance (as defined in the Trust Agreement) as of the Cut-off Date of $1,155,303,179.27 (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6AX, Class 1-A7, Class 1-APPAX, Class 2-A1, Class 2-A2, Class 23-A3, Class 2-A4, Class 2-A5, Class 2-APA1, Class 3-AA2, Class 34-APA1, Class AX4-A2, Class 5-A1, Class 5-A2, Class B1, Class B1X-I, Class B2-I, Class B2XB3-I, Class B3 B4-I, Class B5-I, Class B1-II, Class B2-II, Class B3-II, Class B4-II and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513127589. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCR; the Class B1 and B1X Certificates be rated "AA" by DCR; the Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR.----------------------

Series Designation. Series 20002007-1AR1. ------------------ Terms of the Series 20002007-1 AR1 Certificates: Structured Asset Securities Corporation, Series 2000-1 GreenPoint Mortgage Funding Trust Mortgage Pass-Through Certificates, Class 1Series 2007-A1AR1, Class 1-A2A1A, Class 1-A1B, Class 1-A2A, Class 1-A3, Class 12-A1A, Class 2-A1B, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4, Class 1M1-A5I, Class 1M2-A6I, Class 1M3-A7I, Class 1M4-API, Class 2M5-A1I, Class 2M6-A2I, Class 2M7-A3I, Class 2M8-A4I, Class 2M9-A5I, Class 2M1-APII, Class 3M2-AII, Class 3M3-APII, Class AXM4-II, Class B1M5-II, Class B1XM6-II, Class B2M7-II, Class B2XM8-II, Class B3M9-II, Class B4X-I, Class B5X-II, Class B6 P-I, Class P-II, Class C-I, Class C-II and Class R Certificates (the "“Certificates"”) will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "“Trust Fund"”). Certain classes of Certificates will also represent an interest in one or more cap agreements. The primary assets of the Trust Fund on the Closing Date (as defined below) will consist primarily of three pools of fixed rate, conventional, first lien, adjustable rate and hybrid, fully amortizing and balloon, negative amortization residential mortgage loans having a total Scheduled Principal Balance (as defined in the Trust Agreement) as of the Cut-off Date of $1,464,750,955 (the "“Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"”). Only the Class 1-A1A1A, Class 1-A2A1B, Class 1-A2A, Class 1-A3, Class 12-A1A, Class 2-A1B, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4, Class 1M1-A5I, Class 1M2-A6I, Class 1M3-A7I, Class 1M4-API, Class 2M5-A1I, Class 2M6-A2I, Class 2M7-A3I, Class 2M8-A4I, Class 2M9-A5I, Class 2M1-APII, Class 3M2-AII, Class 3M3-APII, Class AXM4-II, Class B1M5-II, Class B1XM6-II, Class B2M7-II, Class B2X, Class B3 M8-II and Class R M9-II Certificates (the "“Offered Certificates"”) are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513133985. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1A1A, Class 1-A2A1B, Class 1-A2A, Class 1-A3, Class 12-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APA1A, Class 2-A1B, Class 3-A1, Class 23-A2, Class 23-A3, Class 2-A4, Class 2-A5, Class 2-AP, A3 and Class 3-A, Class 3-AP and Class AX A4 Certificates be rated "“AAA" ” by each Standard & Poor’s, a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCR") “S&P”), and Xxxxx'x “Aaa” by Xxxxx’x Investors Service, Inc. ("“Moody's," ’s” and together with DCRS&P, the "“Rating Agencies"”); the Class R M1-I Certificates be rated "AAA" “AA+” by DCRS&P and “Aaa” by Moody’s; the Class B1 and B1X M2-I Certificates be rated "“AA" ” by DCRS&P and “Aa1” by Moody’s; the Class B2 and B2X M3-I Certificates be rated "“Aa1” by Moody’s; the Class M4-I Certificates be rated “Aa2” by Moody’s; the Class M5-I Certificates be rated “A1” by Moody’s; the Class M6-I Certificates be rated “A2” by Moody’s; the Class M7-I Certificates be rated “A3” by Moody’s; the Class M8-I Certificates be rated “Baa1” by Moody’s; the Class M9-I Certificates be rated “Baa2” by Moody’s; the Class M1-II Certificates be rated “AA+” by S&P and “Aa1” by Moody's; the Class M2-II Certificates be rated “AA” by S&P and “Aa2” by Moody's; the Class M3-II Certificates be rated “AA-“ by S&P and “Aa2” by Moody's; the Class M4-II Certificates be rated “A+” by S&P and “Aa3” by Moody's; the Class M5-II Certificates be Rated “A" ” by DCRS&P and “A1” by Moody's; the Class M6-II Certificates be rated “A-” by S&P and “A2” by Moody's; the Class M7-II Certificates be rated “BBB+” by S&P and “A3” by Moody's; the Class M8-II Certificates be rated “Baa1” by Moody's; and the Class B3 M9-II Certificates be rated "BBB" “Baa3” by DCRMoody's.

Series Designation. Series 20002001-15. ------------------ Terms of the Series 20002001-1 5 Certificates: Structured Asset Securities --------------------------------------- Corporation, Series 20002001-1 5 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-AP, Class 1-AX, Class 2-A1, Class 2-A2, Class 2-A3, Class 23-A4A1, Class 23-A2, Class 3-A3, Class 3-A5, Class 2-AP, Class 3-AA6, Class 3-AP, Class AXA4, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three pools of fixed rate, conventional, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-AP, Class 1-AX, Class 2-A1, Class 2-A2, Class 2-A3, Class 23-A4A1, Class 23-A2, Class 3-A3, Class 3-A5, Class 2-AP, Class 3-AA6, Class 3-AP, Class AXA4, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851335026. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Date ------------------- Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-AP, Class 1-AX, Class 2-A1, Class 2-A2, Class 2-A3, Class 23-A4A1, Class 23-A2, Class 3-A3, Class 3-A5, Class 2-AP, Class 3-AA6, Class 3-AP and Class AX A4 Certificates be rated "AAA" by each Standard & Poor's Rating Services, a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCRS&P") and rated "Aaa" by Xxxxx'x Investors Service, Inc. Inc., ("Moody's,Xxxxx'x" together with DCR, and collectively the "Rating Agencies"); the Class R Certificates Certificate be rated "AAA" by DCRS&P; the Class B1 and B1X Certificates be rated "Aa3" by Xxxxx'x and "AA" by DCRS&P; the Class B2 and B2X Certificates be rated "A3" by Moody's and "A" by DCRS&P; and the Class B3 Certificates be rated "Baa3" by Moody's and "BBB" by DCR.S&P.

Series Designation. Series 20002001-1. ------------------ Terms of the Series 20002001-1 Certificates: Structured Asset Securities Corporation, Series 20002001-1 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-AX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 3-A, Class 3-APAX, Class AX3-AP, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three pools of fixed rate, conventional, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-AX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 3-A, Class 3-APAX, Class AX3-AP, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851335026. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-AX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 3-A, Class 3-AP AX and Class AX 3-AP Certificates be rated "AAA" by each of Duff Standard & Xxxxxx Credit Poor's Rating Co. Services ("DCRS&P") and Xxxxx'x rated "Aaa" by Moody's Investors Service, Inc. Inc., ("Moody's," together with DCR, and xxxxxxxively the "Rating Agencies"); the Class xxx Xlass R Certificates Certificate be rated "AAA" by DCRS&P; the Class B1 and B1X Certificates be rated "AA" by DCRS&P and "Aa3" by Moody's; the Class B2 and B2X Certificates be rated "A" by DCRS&P and "A2" by Moody's; and the Class B3 Certificates be rated "BBB" by DCRS&P and "Baa2" by Moody's.

Series Designation. Series 20002007-1. ------------------ Terms of the Series 20002007-1 Certificates: Structured Asset Securities Corporation, Series 2000-1 Adjustable Rate Mortgage Loan Trust Mortgage Pass-Through Certificates, Series 2007-1, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP, Class AX, Class B1X-0, Xxxxx X-0, Class B1XM-3, Class M-4, Class M-5, Class M-6, Class M-7, Class B1-II, Class B2, Class B2X-II, Class B3-II, Class B4-II, Class B5-II, Class B6 B6-II, Class P-I, Class P-II, Class X, Class C, Class R-I and Class R R-II (the "“Certificates"”) will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "“Trust Fund"”). The primary assets of the Trust Fund on the Closing Date (as defined below) will consist primarily of three two pools of fixed rate, conventional, first lien, adjustable rate, fully amortizing, residential mortgage loans having a total Scheduled Principal Balance (as defined in the Trust Agreement) as of the Cut-off Date of $491,097,797.16 (the "“Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"”). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP, Class AX, Class B1X-0, Xxxxx X-0, Class B1XM-3, Class M-4, Class M-5, Class M-6, Class M-7, Class B1-II, Class B2-II, Class B2X, Class B3 B3-II and Class R R-II Certificates (the "“Offered Certificates"”) are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513133985. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, A1 and Class 1-A2A2 Certificates be rated “AAA” by Standard & Poor’s, Class 1A division of The XxXxxx-A3Xxxx Companies, Class 1-A4Inc. (“S&P”) and “Aaa” by Xxxxx’x Investors Service, Class 1-A5Inc., Class 1-A6, Class 1-A7, Class 1-AP, (“Moody’s”); the Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, AX and the Class 2R-AP, Class 3-A, Class 3-AP and Class AX II Certificates be rated "“AAA" ” by each of Duff & Xxxxxx Credit Rating Co. S&P and by Fitch Ratings LTD ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"“Fitch”); the Class R M-1 Certificates be rated "“Aa2” by Moody’s and “AAA" ” by DCRS&P; the Class B1 and B1X M-2 Certificates be rated "AA" “Aa3” by DCRMoody’s and “AA+” by S&P; the Class B2 and B2X M-3 Certificates be rated "“AA+” by S&P; the Class M-4 Certificates be rated “AA” by S&P; the Class M-5 Certificates be rated “A+” by S&P; the Class M-6 Certificates be rated “A" ” by DCRS&P; the Class M-7 Certificates be Rated “BBB” by S&P; the Class B1-II Certificates be rated “AA” by Fitch; the Class B2-II Certificates be Rated “A” by Fitch; and the Class B3 B3-II Certificates be rated "“BBB" ” by DCRFitch.

Series Designation. Series 20002002-115. ------------------ Terms of the Series 20002002-1 15 Certificates: Structured Asset Securities Corporation, Series 20002002-1 15 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class A4, Class A5, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6A6 , Class 1-A7, Class 1-APA8, Class 21-A1A9, Class 21-A2A10, Class 1-A11, Class 1-A12, Class 2-A3, Class 2-A4A6, Class 2-A5A7, Class 2-APA8, Class 2-A9, Class 2-A10, Class 3-AA2, Class 3-A3, Class 3-A6, Class 3-A7, Class 3-A8, Class 3-A9, Class 3-A10, Class AP, Class AX, Class PAX, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 B6, Class P, Class E and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three pools of fixed rate, conventional, fully amortizing, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class A4, Class A5, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6A6 , Class 1-A7, Class 1-APA8, Class 21-A1A9, Class 21-A2A10, Class 1-A11, Class 1-A12, Class 2-A3, Class 2-A4A6, Class 2-A5A7, Class 2-APA8, Class 2-A9, Class 2-A10, Class 3-AA2, Class 3-A3, Class 3-A6, Class 3-A7, Class 3-A8, Class 3-A9, Class 3-A10, Class AP, Class AX, Class PAX, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851382904. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, Class 1-A2, Class A4, Class A5, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6A6 , Class 1-A7, Class 1-APA8, Class 21-A1A9, Class 21-A2A10, Class 1-A11, Class 1-A12, Class 2-A3, Class 2-A4A6, Class 2-A5A7, Class 2-APA8, Class 2-A9, Class 2-A10, Class 3-AA2, Class 3-AP A3, Class 3-A6, Class 3-A7, Class 3-A8, Class 3-A9, Class 3-A10, Class AP, Class AX and Class AX PAX Certificates be rated "AAA" by each Standard & Poor's Ratings Service, a division of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors ServiceThe XxXxxx-Xxxx Companies, Inc. ("Moody's,S&P") and be rated "AAA" by Fitch Ratings ("Fitch" and, together with DCRS&P, the "Rating Agencies"); the Class R Certificates Certificate be rated "AAA" by DCRFitch and S&P; the Class B1 and B1X Certificates be rated "AA" by DCRS&P; the Class B2 and B2X Certificates be rated "A" by DCRS&P; and the Class B3 Certificates be rated "BBB" by DCR.S&P.

Series Designation. Series 20001997-14. ------------------ Terms of the Series 20001997-1 4 Certificates: Structured Asset Securities --------------------------------------- Corporation, Series 20001997-1 4 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3AP, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 32-AA7, Class 32-A8, Class 2-A9, Class 2-AP, Class 2-AX, Class 1-B1, Class B1X2-B1, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 B6, Class R1 and Class R R2 (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three two pools of fixed adjustable rate, conventional, first lien, lien residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3AP, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 32-AA7, Class 32-A8, Class 2-A9, Class 2-AP, Class 2-AX, Class R1 and Class R2 Certificates (collectively, the "Senior Certificates") and the Class 1-B1, Class B1X2-B1, Class B2, Class B2X, B2 and Class B3 and Class R Certificates (together with the Senior Certificates, the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 33333-6851399598. ---------------------- Certificate Ratings: It is a condition to the issuance of Closing that at the Closing Date: Senior ------------------- Certificates (other than the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 21-A1, Class 2-A2, Class 2-A3, Class 2-A4AX, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class 2-AX Certificates Certificates) that they be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors ServiceStandard & Poor's Rating Services, a division of The XxXxxx-Xxxx Companies, Inc. ("Moody's," together with DCR, the "Rating AgenciesS&P"); . It is a condition to the issuance of the Class R 1-AP, Class 1-AX, Class 2-A5, Class 2-AP and Class 2-AX Certificates that they be rated "AAA" by DCR; DCR and "AAAr" by S&P. It is a condition to the issuance of the Class 1-B1 and B1X Class 2-B1 Certificates that they be rated "AA" by DCRDCR and S&P; it is a condition to the issuance of the Class B2 and B2X Certificates that they be rated "A" by DCR; and it is a condition to the issuance of the Class B3 Certificates that they be rated "BBB" by DCR.

Series Designation. Series 20002002-16. ------------------ Terms of the Series 20002002-1 6 Certificates: Structured Asset Securities Corporation, Series 20002002-1 6 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 23-A1, Class 3-A2, Class 3-A3, Class 23-A4, Class 23-A5, Class 23-APA6, Class 3-AA7, Class 3-IAX, Class PAX, Class AP, Class AX, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 B6, Class P and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three pools of fixed rate, conventional, fully amortizing and balloon, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 23-A1, Class 3-A2, Class 3-A3, Class 23-A4, Class 23-A5, Class 23-APA6, Class 3-AA7, Class 3-IAX, Class PAX, Class AP, Class AX, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851382904. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 23-A1, Class 3-A2, Class 3-A3, Class 23-A4, Class 23-A5, Class 23-APA6, Class 3-AA7, Class 3-IAX, Class PAX, Class AP and Class AX Certificates be rated "AAA" by each Standard & Poor's Ratings Service, a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCRS&P") and be rated "Aaa" by Xxxxx'x Investors Service, Inc. ("Moody's,Xxxxx'x" and, together with DCRS&P, the "Rating Agencies"); the Class R Certificates Certificate be rated "AAA" by DCRS&P; the Class B1 and B1X Certificates be rated "AA" by DCRS&P; the Class B2 and B2X Certificates be rated "A" by DCRS&P; and the Class B3 Certificates be rated "BBB" by DCR.S&P.

Series Designation. Series 20002003-1. ------------------ 34A. ------------------- ---------------- Terms of the Series 20002003-1 34A Certificates: Structured Asset Securities Corporation, Series 20002003-1 34A Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APA, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-AX, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4, Class 23-A5, Class 23-APA6, Class 3-AX, Class 4-A, Class 34-AP, Class AX, Class B15-A1, Class B1X5-A2, Class 5-A3, Class 5-A4, Class 5-A5, Class 5-A6, Class 5-AX, Class 5-PAX, Class 6-A, Class B1-I, Class B1-I-X, Class B2-I, Class B2XB2- I-X, Class B1-II, Class B2-II, Class B3, Class B4, Class B5, Class B6 B6, Class P-I, Class P-II, Class P-III and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three six pools of fixed adjustable rate, conventional, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APA, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-AX, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4, Class 23-A5, Class 23-APA6, Class 3-AX, Class 4-A, Class 34-AP, Class AX, Class B15-A1, Class B1X5-A2, Class 5-A3, Class 5-A4, Class 5-A5, Class 5-A6, Class 5-AX, Class 5-PAX, Class 6-A, Class B1-I, Class B1-I-X, Class B2-I, Class B2XB2-I-X, Class B1-II, Class B2-II, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513106295. ---------------------- ------------------------------------------------ Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APA, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-AX, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4, Class 23-A5, Class 23-APA6, Class 3-AX, Class 4-A, Class 34-AP AX, Class 5-A1, Class 5-A2, Class 5-A3, Class 5-A4, Class 5-A5, Class 5-A6, Class 5-AX, Class 5-PAX, Class 6-A and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCRStandard & Poor's, a division of The McGraw-Hill Companies, Inc. ("S&P"), and "Aaa" by Moody's Investors Sxxxxxx, Xxx., ("Moody's" and together with S&P, thx "Xxxxng Agencies"); the Class B1 B1-0, Xxxxs B1-I-X and B1X Class B1-II Certificates be rated "AA" by DCR; S? the Class B2 B2-I, Class B2-I-X and B2X Class B2-II Certificates be rated "A" by DCR; S&P and the Class B3 Certificates be rated "BBB" by DCR.S&P. Terms of Sale of Offered Certificates: The Depositor agrees to sell to Lehman Brothers Inc. (the "Underwriter"), and the Underwriter agrees xx xxxchase from the Depositor, the Offered Certificates in the principal amounts and prices set forth on Schedule 1 annexed hereto. The purchase price for the Offered Certificates shall be the Purchase Price Percentage set forth in Schedule 1 plus accrued interest at the initial interest rate per annum from and including the Cutoff Date up to, but not including, the Closing Date. The Underwriter will offer the Offered Certificates to the public from time to time in negotiated transactions or otherwise at varying prices to be determined at the time of sale. Cut-off Date: October 1, 2003. ------------- Closing Date: 10:00 A.M., New York time, on or about October 30, 2003. On the Closing Date, the Depositor will deliver the Offered Certificates to the Underwriter against payment therefor for the account of the Underwriter. If the foregoing is in accordance with your understanding of our agreement, please sign and return to us a counterpart hereof, whereupon this instrument along with all counterparts will become a binding agreement between the Depositor and the Underwriter in accordance with its terms. LEHMAN BROTHERS INC. By: ___________________________ Name: Stanley P. Labanowski Title: Xxxxxx Xxxx Xxxxxxxxx Accepted: STRUCTURED ASSET SECURITIES CORPORATION By: _____________________________ Name: Michael C. Hitzmann Title: Vice President Xxxxxule 1 ---------- Class ----- Initial Certificate Certificate Purchase Price Principal Interest Rate Percentage Amount(1) ------------- ---------- --------- 1-A $93,424,000 Adjustable(2) 100% 2-A1 $50,000,000 Adjustable(2) 100% 2-A2 $75,000,000 4.315%(3) 100% 2-A3 $23,614,000 4.600%(3) 100% 2-AX (4) 4.600%(4) 100% 3-A1 $5,000,000 4.960%(3) 100% 3-A2 $147,500,000 4.580%(3) 100% 3-A3 $196,579,000 4.700%(3) 100% 3-A4 $15,000,000 Adjustable(2) 100% 3-A5 $30,000,000 4.130%(3) 100% 3-A6 $5,900,000 Adjustable(2) 100% 3-AX (4) 4.700%(4) 100% 4-A $121,642,000 4.150%(3) 100% 4-AX (4) 4.150%(4) 100% 5-A1 $128,025,000 1.870%(3) 100% 5-A2 $69,403,000 4.355%(3) 100% 5-A3 $29,107,000 3.840%(3) 100% 5-A4 $191,000,000 4.630%(3) 100% 5-A5 $9,550,000 4.650%(3) 100% 5-A6 (4) 4.650%(4) 100% 5-AX (4) 4.650%(4) 100% 5-PAX (4) 4.650%(4) 100% 6-A $132,251,000 Adjustable(2) 100% B1-I $3,585,000 Adjustable(2) 100% B1-I-X (4) Adjustable(2)(4) 100% B2-I $1,464,000 Adjustable(2) 100% B2-I-X (4) Adjustable(2)(4) 100% B1-II $40,376,000 Adjustable(2) 100% B2-II $11,719,000 Adjustable(2) 100% B3 $10,029,000 Adjustable(2) 100% R $100 Adjustable(2) 100% ---------------

Series Designation. First Nationwide Trust 1999-1; Series 20001999-1. ------------------ Terms of the Series 20001999-1 Certificates: First Nationwide Trust 1999-1, Structured Asset Securities Corporation, Series 20001999-1 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APA, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 32-AA7, Class 32-APA8, Class AX, Class AP, Class 1-B1, Class B1X2-B1, Class 1-B2, Class B2X2-B2, Class 1-B3, Class 2-B3, Class 1-B4, Class 2-B4, Class 1-B5, Class 2-B5, Class 1-B6, Class 2-B6 and Class R Certificates (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three (i) two pools of fixed rate, fully amortizing, conventional, first lien, lien residential mortgage loans (the "Mortgage Loans"); (ii) a certificate guaranty insurance policy for the exclusive benefit of the Class 2-A3 Certificates; and (iii) a mortgagereserve fund exclusively for the benefit of the Class 2-backed certificate (the "Underlying Certificate")A3 Certificates. Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-APA, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 32-AA7, Class 32-APA8, Class AX, Class AP, Class 1-B1, Class B1X, Class 2-B2, Class B2X1-B2, Class 2-B2, Class 1-B3, Class 2-B3 and Class R Certificates (together, the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A, Class 2-A1, Class 12-A2, Class 12-A3, Class 1-A4, Class 12-A5, Class 12-A6, Class 12-A7, Class 2-A8 and Class R Certificates be rated "AAA" by Standard & Poor's Rating Services, a division of the XxXxxx-Xxxx Companies, Inc. ("S&P") that the Class 1-APA, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 32-AA7, Class 32-A8, Class AX, Class AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCRFitch IBCA, Inc. ("Fitch"); that the Class 2-A4, Class AX and Class AP Certificates be rated "AAAr" by S&P; that the Class 1-B1 and B1X Class 2-B1 Certificates be rated "AA" by DCRFitch; that the Class 1-B2 and B2X Class 2-B2 Certificates be rated "A" by DCRFitch; and that the Class 1-B3 and Class 2-B3 Certificates be rated "BBB" by DCRFitch.

Series Designation. Series 20002006-12. ------------------ ------------------- -------------- Terms of the Series 20002006-1 2 Certificates: Structured Asset Securities Corporation, Series 2000-1 Adjustable Rate Mortgage Loan Trust Mortgage Pass-Through Certificates, Series 2006-2, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3AX, Class 2-A4, Class 2-A5, Class 2-APPAX, Class 3-AA1, Class 3-APA2, Class 4-A1, Class 4-A2, Class 4-AX, Class 5-A1, Class 5-A2, Class 5-AX, Class B1, Class B1X-I, Class B2, Class B2X-I, Class B3-I, Class B4-I, Class B5-I, Class B6 B6-I, Class B7-I, Class B1-II, Class B2-II, Class B3-II, Class B4-II, Class B5-II, Class B6-II, Class B7-II, Class P-I, Class P-II, Class P-III, Class P-IV and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund on the Closing Date (as defined below) will consist primarily of three five pools of fixed rate, conventional, first lien, adjustable rate, fully amortizing, residential mortgage loans having a total Scheduled Principal Balance (as defined in the Trust Agreement) as of the Cut-off Date of $1,329,713,405.01 (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3AX, Class 2-A4, Class 2-A5, Class 2-APPAX, Class 3-AA1, Class 3-APA2, Class 4-A1, Class 4-A2, Class 4-AX, Class 5-A1, Class 5-A2, Class 5-AX, Class B1, Class B1X-I, Class B2-I, Class B2XB3-I, Class B3 B4-I, Class B1-II, Class B2-II, Class B3-II, Class B4-II and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCR; the Class B1 and B1X Certificates be rated "AA" by DCR; the Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR127589.

Series Designation. Series 20002004-1. ------------------ ------------------- -------------- Terms of the Series 20002004-1 Certificates: Structured Asset Securities CorporationAdjustable Rate Mortgage Loan, Series 20002004-1 Mortgage Pass-Through Certificates, Class 1-A, Class 2-A, Class 2-AX, Class 3-A1, Class 13-A2, Class 13-A3, Class 13-AX, Class 4-A-1, Class 4-A2, Class 4-A3, Class 4-A4, Class 14-A5, Class 14-A6AX, Class 14-A7PAX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 35-A, Class 35-APAX, Class 6-A, Class 6-AX, Class B1-I, Class B1X-I, Class B2-I, Class B2X-I, Class B1-II, Class B1X-II, Class B2-II, Class B3, Class B4, Class B5, Class B6 B6, Class P-I, Class P-II, Class P-III, Class CX and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three six pools of fixed adjustable rate, conventional, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A, Class 2-A, Class 2-AX, Class 3-A1, Class 13-A2, Class 13-A3, Class 13-AX, Class 4-A-1, Class 4-A2, Class 4-A3, Class 4-A4, Class 14-A5, Class 14-A6AX, Class 14-A7PAX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 35-A, Class 35-APAX, Class 6-A, Class 6-AX, Class B1-I, Class B1X-I, Class B2-I, Class B2X-I, Class B1-II, Class B1X-II, Class B2-II, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513106295. ---------------------- ----------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A, Class 2-A, Class 2-AX, Class 3-A1, Class 13-A2, Class 13-A3, Class 13-AX, Class 4-A-1, Class 4-A2, Class 4-A3, Class 4-A4, Class 14-A5AX, Class 14-A6PAX, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 35-A, Class 35-AP AX, Class 6-A, Class 6-AX and Class AX R Certificates be rated "AAA" by each Standard & Poor's, a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCRS&P") ), and "Aaa" by Xxxxx'x Investors Service, Inc. ("Moody's,Xxxxx'x" and together with DCRS&P, the "Rating Agencies"); the Class R 4-A5 Certificates be rated "AAA" by DCRS&P; the Class B1 B1-I, Class B1X-I, Class B1-II and B1X Class B1X-II Certificates be rated "AA" by DCRS&P; the Class B2 B2-I, Class B2X-I and B2X Class B2-II Certificates be rated "A" by DCR; S&P and the Class B3 Certificates be rated "BBB" by DCRS&P. Terms of Sale of Offered Certificates: The Depositor agrees to sell to Xxxxxx Brothers Inc., (the "Underwriter") and the Underwriter agrees to purchase from the Depositor, the Offered Certificates in the principal amounts and prices set forth on Schedule 1 annexed hereto. The purchase price for the Offered Certificates shall be the Purchase Price Percentage set forth in Schedule 1 plus accrued interest at the initial interest rate per annum from and including the Cutoff Date up to, but not including, the Closing Date. The Underwriter will offer the Offered Certificates to the public from time to time in negotiated transactions or otherwise at varying prices to be determined at the time of sale.

Series Designation. Series 20002002-1. 16A. ------------------ ---------------- Terms of the Series 20002002-1 16A Certificates: Structured Asset Securities Corporation, Series 20002002-1 16A Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 23-A1, Class 3-A2, Class 4-A1, Class 4-A2, Class 4-A3, Class 25-A4A1, Class 25-A5, Class 2-AP, Class 3-A, Class 3-AP, Class AXA2, Class B1-I, Class B1XB1-I-X, Class B2-I, Class B2XB2-I-X, Class B1-II, Class B2-II, Class B3, Class B4, Class B5, Class B6 B6, Class P-I, Class P-II and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three five pools of fixed adjustable rate, conventional, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 23-A1, Class 3-A2, Class 4-A1, Class 4-A2, Class 4-A3, Class 25-A4A1, Class 25-A5, Class 2-AP, Class 3-A, Class 3-AP, Class AXA2, Class B1-I, Class B1XB1-I-X, Class B2-I, Class B2XB2-I-X, Class B1-II, Class B2-II, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851382904. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCR; the Class B1 and B1X Certificates be rated "AA" by DCR; the Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR.----------------------

Series Designation. Series 20002001-19. ------------------ ------------------- Terms of the Series 20002001-1 9 Certificates: Structured Asset Securities Corporation, Series 20002001-1 9 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6AP, Class 1-A7, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-AX, Class 3-AA1, Class 3-A2, Class 3-A3, Class 3-A5, Class 3-A6, Class 3-A7, Class 3-AP, Class 3-AX, Class 4-A1, Class 4-A2, Class 4-A3, Class 4-A5, Class 4-A6, Class 4-A7, Class 4-AP, Class 4-AX, Class 5-A1, Class 5-AP, Class 5-AX, Class 6-A1, Class 6-A2, Class 6-A3, Class 6-A5, Class 6-A6, Class 6-AP, Class 6-AX, Class A4, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three six pools of fixed rate, fully amortizing and balloon, conventional, first lien, lien residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6AP, Class 1-A7, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-AX, Class 3-AA1, Class 3-A2, Class 3-A3, Class 3-A5, Class 3-A6, Class 3-A7, Class 3-AP, Class 3-AX, Class 4-A1, Class 4-A2, Class 4-A3, Class 4-A5, Class 4-A6, Class 4-A7, Class 4-AP, Class 4-AX, Class 5-A1, Class 5-AP, Class 5-AX, Class 6-A1, Class 6-A2, Class 6-A3, Class 6-A5, Class 6-A6, Class 6-AP, Class 6-AX, Class A4, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851335026. ---------------------- ----------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6AP, Class 1-A7, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4A5, Class 2-A6, Class 2-AX, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A5, Class 23- A6, Class 3-A7, Class 3-AP, Class 3-AAX, Class 34-AP A1, Class 4-A2, Class 4-A3, Class 4-A5, Class 4-A6, Class 4-A7, Class 4-AP, Class 4-AX, Class 5-A1, Class 5-AP, Class 5-AX, Class 6-A1, Class 6-A2, Class 6-A3, Class 6-A5, Class 6-A6, Class 6-AP, Class 6-AX and Class AX A4 Certificates be rated "AAA" by each Standard & Poor's Rating Services, Inc., a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCRS&P") and Fitch, Inc. ("Fitch") rated "Aaa" by Xxxxx'x Investors Service, Inc. Inc., ("Moody's," together with DCR, the Xxxxx'x"Rating Agencies"); ) the Class R Certificates Certificate be rated "AAA" by DCRS&P and Fitch; the Class B1 and B1X Certificates be rated "AA" by DCRFitch; the Class B2 and B2X Certificates be rated "A" by DCRFitch; and the Class B3 Certificates be rated "BBB" by DCRFitch.

Series Designation. Series 20002001-117. ------------------ Terms of the Series 20002001-1 17 Certificates: Structured Asset Securities Corporation, Series 20002001-1 17 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7AP, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-A7, Class 2-A8, Class 2-A9, Class 2-A10, Class 2-A11, Class 2-A12, Class 2-AX, Class 3-AA1, Class 3-A2, Class 3-A3, Class 3-A5, Class 3-AP, Class 3-AX, Class 4-A1, Class 4-A2, Class 4-A3, Class 4-A5, Class 4-A6, Class 4-A7, Class 4-AP, Class 4-AX, Class A4, Class B1, Class B1X, Class B2, Class B2X, Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three four pools of fixed rate, conventionalfully amortizing, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7AP, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-A7, Class 2-A8, Class 2-A9, Class 2-A10, Class 2-A11, Class 2-A12, Class 2-AX, Class 3-AA1, Class 3-A2, Class 3-A3, Class 3-A5, Class 3-AP, Class 3-AX, Class 4-A1, Class 4-A2, Class 4-A3, Class 4-A5, Class 4-A6, Class 4-A7, Class 4-AP, Class 4-AX, Class A4, Class B1, Class B1X, Class B2, Class B2X, Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851363602. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: Date the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7AP, Class 1-APAX, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4A5, Class 2-A6, Class 2-A7, Class 2-A8, Class 2-A9, Class 2-A10, Class 2-A11, Class 2-A12, Class 2-AX, Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A5, Class 23-AP, Class 3-AAX, Class 34-AP and A1, Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service4-A2, Inc. ("Moody's," together with DCRClass 4-A3, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCR; the 4-A5, Class B1 and B1X Certificates be rated "AA" by DCR; the 4-A6, Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR.4-A7, Class

Series Designation. Series 20002006-1. ------------------ Terms of the Series 20002006-1 Certificates: Structured Asset Securities Corporation, Series 2000-1 Adjustable Rate Mortgage Loan Trust Mortgage Pass-Through Certificates, Series 2006-1, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-AX, Class 3-A1, Class 3-A2, Class 4-A, Class 5-A1, Class 5-A2, Class 5-A3, Class 5-AX, Class 6-A1, Class 6-A2, Class 6-AX, Class 7-A1, Class 7-A2, Class 7-A3, Class 7-A4, Class 27-A5, Class 27-APAX, Class 38-AA1, Class 38-APA2, Class 8-AX, Class B1, Class B1X-I, Class B2, Class B2X-I, Class B3-I, Class B4-I, Class B5-I, Class B6 B6-I, Class B7-I, Class B8-I, Class B9-I, Class B1-II, Class B2-II, Class B3-II, Class B4-II, Class B5-II, Class B6-II, Class B7-II, Class P-I, Class P-II and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund on the Closing Date (as defined below) will consist primarily of three four pools of fixed rate, conventional, first lien, adjustable rate, fully amortizing, residential mortgage loans having a total Scheduled Principal Balance (as defined in the Trust Agreement) as of the Cut-off Date of $1,112,876,859.59 (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-AX, Class 3-A1, Class 3-A2, Class 4-A, Class 5-A1, Class 5-A2, Class 5-A3, Class 5-AX, Class 6-A1, Class 6-A2, Class 6-AX, Class 7-A1, Class 7-A2, Class 7-A3, Class 7-A4, Class 27-A5, Class 27-APAX, Class 38-AA1, Class 38-APA2, Class 8-AX, Class B1, Class B1X-I, Class B2-I, Class B2XB3-I, Class B3 B4-I, Class B5-I, Class B6-I, Class B1-II, Class B2-II, Class B3-II, Class B4-II and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. ("DCR") and Xxxxx'x Investors Service, Inc. ("Moody's," together with DCR, the "Rating Agencies"); the Class R Certificates be rated "AAA" by DCR; the Class B1 and B1X Certificates be rated "AA" by DCR; the Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR127589.

Series Designation. Series 20002001-112. ------------------ Terms of the Series 20002001-1 12 Certificates: Structured Asset Securities Corporation, Series 20002001-1 12 Mortgage Pass-Through Certificates, Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-A7, Class 2-A8, Class 2-A9, Class 2-A10, Class 2-A11, Class 2-A12, Class 2-A13, Class 2-AX, Class 3-AA1, Class 3-APA2, Class 3-A3, Class 3-A4, Class 3-A5, Class 3-AX, Class B1B1(1-3), Class B1XB1(2), Class B2B2(1-3), Class B2XB2(2), Class B3, Class B4, Class B5, Class B6 and Class R (the "Certificates") will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "Trust Fund"). The primary assets of the Trust Fund consist of three four pools of fixed rate, conventionalfully amortizing, first lien, residential mortgage loans (the "Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-A7, Class 2-A8, Class 2-A9, Class 2-A10, Class 2-A11, Class 2-A12, Class 2-A13, Class 2-AX, Class 3-AA1, Class 3-APA2, Class 3-A3, Class 3-A4, Class 3-A5, Class 3-AX, Class B1B1(1-3), Class B1XB1(2), Class B2B2(1-3), Class B2XB2(2), Class B3 and Class R Certificates (the "Offered Certificates") are being sold pursuant to the terms hereof. Registration Statement: File Number 333-6851363602. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Date Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AX, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-APA6, Class 2-A7, Class 2-A8, Class 2-A9, Class 2-A10, Class 2-A11, Class 2-A12, Class 2-A13, Class 2-AX, Class 3-AA1, Class 3-AP A2, Class 3-A3, Class 3-A4, Class 3-A5 and Class 3-AX Certificates be rated "AAA" by each Standard & Poor's Rating Services, a division of Duff & Xxxxxx Credit Rating Co. The XxXxxx-Xxxx Companies, Inc. ("DCRS&P") and rated "Aaa" by Xxxxx'x Investors Service, Inc. Inc., ("Moody's," together with DCR, and collectively the "Rating Agencies"); the Class R Certificates Certificate be rated "AAA" by DCRS&P; the Class B1 B1(1-3) and B1X Class B1(2) Certificates be rated "AA" by DCRS&P; the Class B2 B2(1-3) and B2X Class B2(2) Certificates be rated "A" by DCRS&P; and the Class B3 Certificates be rated "BBB" by DCR.S&P. Terms of Sale of Offered Certificates: The Depositor agrees to sell to Xxxxxx Brothers Inc., (the "Underwriter") and the Underwriter agrees to purchase from the Depositor, the Offered Certificates in the principal amounts and prices set forth on Schedule 1 annexed hereto. The purchase price for the Offered Certificates shall be the Purchase Price Percentage set forth in Schedule 1 plus accrued interest at the initial interest rate per annum from and including the Cut-off Date up to, but not including, the Closing Date. The Underwriter will offer the Offered Certificates to the public from time to time in negotiated transactions or otherwise at varying prices to be determined at the time of sale. Cut-off Date: August 1, 2001. ------------ Closing Date: 10:00 A.M., New York time, on or about August 30, 2001. On the Closing Date, the Depositor will deliver the Offered Certificates to the Underwriter against payment therefor for the account of the Underwriter. Counsel: XxXxx Xxxxxx LLP will act as counsel for the Underwriters. If the foregoing is in accordance with your understanding of our agreement, please sign and return to us a counterpart hereof, whereupon this instrument along with all counterparts will become a binding agreement between the Depositor and the Underwriter in accordance with its terms. XXXXXX BROTHERS INC. By: /s/ Xxxxxx X. Xxxxx ----------------------- Name: Xxxxxx X. Xxxxx Title: Senior Vice President Accepted: STRUCTURED ASSET SECURITIES CORPORATION By: /s/ Xxxxx X. Xxxxxxx ------------------------- Name: Xxxxx X. Xxxxxxx Title: Vice President Schedule 1 Initial Certificate Principal Amount(1) or Initial Notional Certificate Purchase Price Class Amount Interest Rate Percentage ============================== ============================== =========================== ============================ 1-A1 $54,738,000 5.00% 100% 1-A2 30,000,000 4.80 100% 1-A3(2) (3) 6.75 100% 1-A4 200,000,000 5.80 100% 1-A5 10,000,000 6.75 100% 1-A6 10,000,000 6.75 100% 1-A7 24,025,000 6.75 100% 1-AX(2) (3) 6.75 100% 1-AP 184,824 0.00(5) 100% 2-A1 70,600,000 5.75 100% 2-A2 35,771,000 6.35 100% 2-A3 15,200,000 6.50 100% 2-A4(2) (3) 7.25 100% 2-A5 33,550,000 6.00 100% 2-A6 20,000,000 6.50 100% 2-A7 50,000,000 6.35 100% 2-A8 10,000,000 6.50 100% 2-A9 62,004,678 (6) 100% 2-A10 7,900,000 7.25 100% 2-A11 2,326,000 7.25 100% 2-A12 1,000,000 7.25 100% 2-A13 300,000 7.25 100% 2-AX(2) (3) 7.25 100% 3-A1 17,898,000 6.35 100% 3-A2(2) (3) 6.75 100% 3-A3 15,000,000 6.45 100% 3-A4 4,900,000 6.75 100% 3-A5 1,013,000 6.75 100% 3-AX(2) (3) 6.75 100% B1(1-3) 8,790,000 6.75 100% B1(2) 5,933,000 7.25 100% B2(1-3) 3,103,000 6.75 100% B2(2) 2,084,000 7.25 100% B3 4,287,000 (4) 100% R 100 6.75 100%

Series Designation. Series 20002007-1. ------------------ 15N. Terms of the Series 20002007-1 15N Certificates: Structured Asset Securities Corporation, Series 2000-1 Xxxxxx XS Trust Mortgage Pass-Through Certificates, Series 2007-15N, Class 1-A1, Class 1-A2, Class 1-A3, Class 11C-A4A1, Class 11C-A5A2, Class 11C-A6, Class 1-A7, Class 1-APA3, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4AF2, Class 2-A5, Class 2-APAF3, Class 3-AA1, Class 3-A2, Class 3-AX, Class 4-A1, Class 4-A2A, Class 4-A2B, Class 4-A3, Class 4-AX, Class 4-A1A, Class 4-A1B, Class 4-A1C, Class 4-A1D, Class 4-A1E, Class 4-A1F, Class 4-A1G, Class 4-A1H, Class 4-A1IA, Class 4-A1IB, Class 4-A1IC, Class 4-A1ID, Class 4-A1IE, Class 4-A1IF, Class 4-A1IG, Class 4-A1IH, Class M1-I, Class M2-I, Class M3-I, Class M4-I, Class M5-I, Class M6-I, Class M7-I, Class M8-I, Class M9-I, Class M1-II, Class M2-II, Class M3-II, Class M4-II, Class M5-II, Class M6-II, Class M7-II, Class M8-II, Class M9-II, Class AP-I, Class 3-AP, Class AX4-AP, Class B1X-I, Class B1XX-II, Class B2C-I, Class B2X, Class B3, Class B4, Class B5, Class B6 C-II and Class R (the "“Certificates"”) will evidence, in the aggregate, the entire beneficial ownership interest in a trust fund (the "“Trust Fund"”). The primary assets of the Trust Fund on the Closing Date (as defined below) will consist primarily of three five pools of fixed rate, conventional, first lien, hybrid, adjustable rate negative amortization, fully amortizing residential mortgage loans having a total Scheduled Principal Balance (as defined in the Trust Agreement) as of the Cut-off Date of approximately $2,828,002,465 (the "“Mortgage Loans") and a mortgage-backed certificate (the "Underlying Certificate"”). Only the Class 1-A1, Class 1-A2, Class 1-A3, Class 11C-A4A1, Class 11C-A5A2, Class 11C-A6, Class 1-A7, Class 1-APA3, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4AF2, Class 2-A5, Class 2-APAF3, Class 3-AA1, Class 3-APA2, Class 3-AX, Class B14-A1, Class B1X4-A2A, Class B24-A2B, Class B2X4-A3, Class B3 4-AX, Class 4-A1A, Class 4-A1B, Class 4-A1C, Class 4-A1D, Class 4-A1E, Class 4-A1F, Class 4-A1G, Class 4-A1H, Class 4-A1IA, Class 4-A1IB, Class 4-A1IC, Class 4-A1ID, Class 4-A1IE, Class 4-A1IF, Class 4-A1IG and Class R Certificates 4-A1IH, Class M1-I, Class M2-I, Class M3-I, Class M4-I, Class M5-I, Class M6-I, Class M7-I, Class M8-I, Class M9-I, Class M1-II, Class M2-II, Class M3-II, Class M4-II, Class M5-II, Class M6-II, Class M7-II, Class M8-II and Class M9-II (the "“Offered Certificates"”) are being sold pursuant to the terms hereof. Registration Statement: File Number 333-68513139693. ---------------------- Certificate Ratings: It is a condition of Closing that at the Closing Date: the Class 1Date Certificates are rated by Standard & Poor’s, a division of The XxXxxx-A1Xxxx Companies, Class 1-A2Inc. (“S&P”), Class 1-A3by Fitch Ratings, Class 1-A4, Class 1-A5, Class 1-A6, Class 1-A7, Class 1-AP, Class 2-A1, Class 2-A2, Class 2-A3, Class 2-A4, Class 2-A5, Class 2-AP, Class 3-A, Class 3-AP and Class AX Certificates be rated "AAA" by each of Duff & Xxxxxx Credit Rating Co. Inc. ("DCR"“Fitch”) and Xxxxx'x by Xxxxx’x Investors Service, Inc. ("“Moody's," ’s” and together with DCRS&P and Fitch, the "“Rating Agencies"); ”) in accordance with the below: Class R Certificates be rated "AAA" by DCR; the S&P Fitch Xxxxx’x 1-A1 AAA N/A Aaa 1-A2 AAA N/A Aaa 1-A3 AAA N/A Aaa Class B1 and B1X Certificates be rated "AA" by DCR; the Class B2 and B2X Certificates be rated "A" by DCR; and the Class B3 Certificates be rated "BBB" by DCR.S&P Fitch Xxxxx’x 1C-A1 AAA N/A Aaa 1C-A2 AAA N/A Aaa 1C-A3 AAA N/A Aaa 2-A1 AAA N/A Aaa 2-A2 AAA N/A Aaa 2-A3 AAA N/A Aaa AF2 AAA N/A Aaa AF3 AAA N/A Aaa 3-A1 AAA AAA Aaa 3-A2 AAA AAA Aaa 3-AX AAA AAA Aaa 4-A1 AAA AAA Aaa 4-A2A AAA AAA Aaa 4-A2B AAA AAA Aaa 4-A3 AAA AAA Aaa 4-AX AAA AAA Aaa 4-A1A AAA AAA Aaa 4-A1B AAA AAA Aaa 4-A1C AAA AAA Aaa 4-A1D AAA AAA Aaa 4-A1E AAA AAA Aaa 4-A1F AAA AAA Aaa 4-A1G AAA AAA Aaa 4-A1H AAA AAA Aaa 4-A1IA AAA AAA Aaa 4-A1IB AAA AAA Aaa 4-A1IC AAA AAA Aaa 4-A1ID AAA AAA Aaa 4-A1IE AAA AAA Aaa 4-A1IF AAA AAA Aaa 4-A1IG AAA AAA Aaa 4-A1IH AAA AAA Aaa M1-I AA+ N/A Aa1 M2-I AA N/A Aa2 M3-I AA- N/A Aa3 M4-I A+ N/A A1 M5-I A N/A A2 M6-I A- N/A A3 M7-I BBB+ N/A Baa1 M8-I BBB N/A Baa2 M9-I BB- N/A Baa3 M1-II N/A AA+ Aa1 M2-II N/A AA Aa2 M3-II N/A AA- Aa3 M4-II N/A A+ A1 M5-II N/A A A2 M6-II N/A A- A3 M7-II N/A BBB+ Baa1 M8-II N/A BBB Baa2 M9-II N/A BBB- Baa3