1: b, c
2: b,
3: d
4: a
5: b, d
6: a, d
7: a, d
8: a, b
9: b
10: b, c, d
11: b, c
12: a, b
13: b, d
14: d
15: a, b, c
16: c
17: d
18: a, c
19: c, d,
20: c
21: b, d
22: a, c
23: c
24: d
25: a
26: d
27: a, b, d
28: c, d
29: a
30: b
31: a
32: c
33: b
34: a, b,
35: b, c