Distribution Date will constitute the Accrual Amount, which will be added to the Class Principal Balance of that Class on each Distribution Date and will be distributable as principal as set forth in this Terms Sheet under "Allocation of Principal." Notional Classes:  The Notional Classes will not receive distributions of principal but have Class Notional Balances for convenience in describing their entitlements to interest. The Class Notional Balance of each Notional Class represents the percentage indicated below of, and reduces to that extent with, the Class Principal Balance indicated: Class Original Class Notional Balance Represents Approximately BI.................................... $ 8,880,000 100% of OB (PAC III/AD Class) CI.................................... 2,833,333 100% of OC (PAC III/AD Class) FE  .................................. 20,681,518 100% of OE (PAC I Class) NY .................................. 163,504,580 100% of NF (PAC I Class) QI  .................................. 2,411,561 16.6666655148% of QB (PAC II Class) SE  .................................. 20,681,518 100% of OE (PAC I Class) SY  .................................. 41,710,659 100% of FA (SC/PT Class) UI  .................................. 9,804,667 100% of UO (SC/SCH Class) Tax Status:  Double REMIC Series as to the Group 1 through 3 Trust Assets and Double REMIC Series as to the Group 4 Trust Assets. Separate REMIC elections will be made as to the Issuing REMIC and the Pooling REMIC with respect to the Group 1 through 3 Trust Assets and the Group 4 Trust Assets (the "Group 1 through 3 Pooling REMIC," the "Group 1 through 3 Issuing REMIC," the "Group 4 Pooling REMIC" and the "Group 4 Issuing REMIC," respec- tively). See "Certain Federal Income Tax Consequences" in this Supplement and in the Base Offering Circular. Regular and Residual Classes:  Class RR1 is a Residual Class and includes the Residual Interest of the Group 1 through 3 Issuing REMIC and the Group 1 through 3 Pooling REMIC; Class RR2 is a Residual Class and includes the Residual Interest of the Group 4 Issuing REMIC and the Group 4 Pooling REMIC; all other Classes of REMIC Securities are Regular Classes. B-16