1-3
2-1
3-1
4-2
5-4
6-1
7-3
8-3
9-1
10-4
11-1
12-2
13-3
14-1
15-3
16-4
17-4
18-4
19-1
20-4
21-3
22-4
23-1
24-4
25-2

80