4
0
0
6
0
0
4
0
0
6
0
0
20
0
1
4
0
0
10
0
0
4
0
0
4
0
0
8
0
0
8
0
0
6
0
0
5
0
0
8
0
0
4
0
0
6
0
0
6
0
0
5
0
0
3
0
0
4
0
0