2
2
1
1
3
2
1
1
6
2
1
1
9
2
1
1
10
2
1
1
12
2
1
1
13
2
1
1
14
2
1
1
16
2
1
1
18
2
1
1
19
2
1
1
21
2
1
1
22
2
1
1
