4
2
1
1
5
3
2
2
7
2
1
1
8
2
1
1
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
17
2
1
1
18
2
1
1
21
2
1
1
22
2
1
1
23
2
1
1
25
3
2
2
