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