3
2
1
1
4
2
1
1
7
2
1
1
8
2
1
1
12
2
1
1
13
2
1
1
17
2
1
1
19
2
1
1
20
1
0
0
21
2
1
1
22
2
1
1
23
2
1
1
24
2
1
1
