Schedule I Available Combinations(1) REMIC Securities MX Securities Class Original Class Principal Balance or Class Notional Balance Related MX Class Maximum Original Class Principal Balance or Class Notional Balance(2) Principal Type(3) Interest Rate Interest Type(3) CUSIP Number Final Distribution Date(4) Security Groups 1 and 3 Combination 1(6) Z $ 845,312 PZ $ 1,690,624 PAC I/AD 6.0% FIX 38375L VN7 October 2037 ZA 845,312 Combination 2(6) DO $ 8,375,486 PO $  16,750,972 PAC I/AD 0.0% PO 38375L VP2 April 2037 EO 8,375,486 Combination 3(6) FP $   50,252,914 PF $100,505,828 PAC I/AD (5) FLT 38375L VQ0 April 2037 FB 50,252,914 Security Group 3 Combination 4 NF $   50,000,000 GF $  50,000,000 PT (5) FLT 38375L VR8 October 2037 IA 50,000,000 IB 50,000,000 IC 50,000,000 IS 50,000,000 Combination 5 NF $   50,000,000 HF $  50,000,000 PT (5) FLT 38375L VS6 October 2037 IA 50,000,000 IB 50,000,000 IC 50,000,000 IS 50,000,000 IT 50,000,000 S-I-1