20
2
1
6
0
0
7
0
0
15
0
0
6
0
0
6
0
0
6
0
0
6
0
0
2
0
0
4
0
0
4
0
0
8
0
0
6
0
0
4
0
0
3
0
0
3
0
0
4
0
0
6
0
0
6
0
0
3
0
0