1
2
1
1
2
2
1
1
3
2
1
1
4
2
1
1
6
2
1
1
7
2
1
1
8
2
1
1
10
2
1
1
11
2
1
1
12
3
2
2
18
2
1
1
19
2
1
1
20
2
1
1
21
2
1
1
22
2
1
1
24
2
1
1
