2
2
1
1
3
2
1
1
4
2
1
1
6
2
1
1
8
2
1
1
9
2
1
1
13
2
1
1
15
2
1
1
17
2
1
1
20
2
1
1
21
2
1
1
23
3
2
2
24
2
1
1
25
2
1
1
