1
2
1
1
2
2
1
1
4
2
1
1
7
2
1
1
9
2
1
1
10
2
1
1
12
3
2
2
13
2
1
1
15
2
1
1
16
2
1
1
17
2
1
1
18
2
1
1
20
2
1
1
21
2
1
1
22
2
1
1
