2
1
0
1
2
1
1
2
2
1
1
3
2
1
1
4
2
1
1
16
2
1
1
17
6
5
5
18
2
1
1
19
2
1
1
20
2
1
1
21
2
1
1
22
2
1
1
23
2
1
1
