1
2
1
1
2
2
1
1
3
2
1
1
4
21
20
20
7
2
1
1
9
2
1
1
10
2
1
1
11
2
1
1
12
2
1
1
14
2
1
1
15
2
1
1
16
2
1
1
17
2
1
1
18
2
1
1
19
2
1
1
20
2
1
1
