1-1
1-2
2-1
2-2
2-3
3-1
3-2_
4-1
4-2
5-1
5-2
6-1
7-1
7-2
8-1
8-2
8-3
9-1
10-1
11-1
12-1
12-2
13-1
13-3
13-2
14-1
15-1
15-2
16-1
17-1
17-2
18-1
18-2
