Section 2.1:

1, 2, 3, 4, 5, 6, 7,11,17,19,21,23,25,31,33,51,53,55,57,59,73-76

Section 2.4:

1, 2, 3, 4, 7, 9, 11, 13, 15, 27, 30, 31, 36

Section 2.5:

1, 2, 7, 9, 13, 15, 17, 19, 21, 27, 29, 33, 35, 39, 41, 48