21.
Expenses for household and dependent care services necessary for gainful employment.
22.
Credit for the elderly and the permanently and totally disabled.
25.
Interest on certain home mortgages.
25A.
American Opportunity and Lifetime Learning credits.
25B.
Elective deferrals and IRA contributions by certain individuals.
25C.
Nonbusiness energy property.
25D.
Residential energy efficient property.
26.
Limitation based on tax liability; definition of tax liability.