9
2
1
1
10
2
1
1
11
2
1
1
12
2
1
1
13
2
1
1
14
2
1
1
15
2
1
1
16
2
1
1
20
2
1
1
21
2
1
1
22
2
1
1
23
2
1
1
24
2
1
1
