1.3: 1,2 2.1: 2, 3, 4, 5
2.2: 1,2,3 2.3: 1,2,3
3.1: 2, 4, 6 (extra credit), 8 3.2: 1,2
3.2: 3,4,6 3.3: 1,2,4,5,6
3.3: 10 3.4: 1, 2, 3
3.4: 8, 9, 10, 11
5.1: 1,2,3,4