2
2
1
1
3
21
20
20
4
2
1
1
5
2
1
1
6
2
1
1
8
0
-1
-1
11
2
1
1
12
2
1
1
13
2
1
1
15
2
1
1
16
2
1
1
17
2
1
1
23
2
1
1
