15
4
2
9
0
0
6
0
0
4
0
0
6
0
0
9
0
0
6
0
0
3
1
1
4
0
0
4
0
0
6
0
0
6
0
0
9
0
0
9
0
0
9
0
0
5
0
0
5
0
0
12
0
0
6
0
0
6
0
0