3
2
1
1
7
2
1
1
8
2
1
1
9
2
1
1
12
3
2
2
13
2
1
1
14
2
1
1
17
2
1
1
20
2
1
1
22
2
1
1
23
2
1
1
24
2
1
1
25
2
1
1
