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) Combination 1 IT $  32,000,000 TB $  26,836,366 TAC/AD (5)   FLT/DLY/SP(6)       38375KFS6 June 2037 OP 13,090,910 PO 10,472,728 TI 40,000,000 UO 3,272,728 UT 10,000,000 Combination 2 LB $  58,440,000 AM $  86,925,200 PAC 5.5% FIX 38375KFT4         December 2033 LI 28,485,200 LO 28,485,200 Combination 3 LB $  58,440,000 WA $136,397,000 PAC 5.5% FIX 38375KFU1         November 2036 LC 25,145,000 LD 52,812,000 Combination 4 LI $  96,560,000 LA $  96,560,000 PAC 5.5% FIX 38375KFV9 April 2031 LO 96,560,000 Combination 5 PF $154,211,000 FP $154,211,000 PAC (5) FLT 38375KFW7 June 2037 PS 30,842,200 ST 30,842,200 B-8