Uncompensated Interest Shortfall With respect to a Loan Group, for any Distribution Date, the sum of (i) the aggregate Relief Act Shortfall for such Distribution Date with respect to the Mortgage Loans in such Loan Group, (ii) aggregate Curtailment Shortfall for such Distribution Date with respect to the Mortgage Loans in such Loan Group and (iii) the excess, if any, of (a) aggregate Uncollected Interest for such Distribution Date with respect to the Mortgage Loans in such Loan Group over (b) Compensating Interest for such Distribution Date with respect to the Mortgage Loans in such Loan Group. Uncompensated Interest Shortfall for Loan Group I shall be allocated to the Group I-L Regular Interests and the portions of the Group C-B-L Regular Interests that derive their Interest Distribution Amounts from the Group I Loans, pro rata according to the amount of interest accrued but unpaid on each such Class or portion thereof, in reduction thereof. Uncompensated Interest Shortfall for Loan Group II shall be allocated to the Group II-L Regular Interests and the portions of the Group C-B-L Regular Interests that derive their Interest Distribution Amounts from the Group II Loans, pro rata according to the amount of interest accrued but unpaid on each such Class or portion thereof, in reduction thereof. Uncompensated Interest Shortfall for Loan Group I shall be allocated to the Class I-X-M, Class C-Y-1 and Class C-Z-1 Regular Interests, pro rata according to the amount of interest accrued but unpaid on each such Class, in reduction thereof. Uncompensated Interest Shortfall for Loan Group II shall be allocated to the Class II-X-M, Class C-Y-2 and Class C-Z-2 Regular Interests, pro rata according to the amount of interest accrued but unpaid on each such Class, in reduction thereof.