6
0
0
0
0
1
2
9
0
0
4
0
0
6
0
0
6
0
0
6
0
0
7
0
0
7
0
0
6
4
0
0
5
5
6
0
0
6
0
0
0
0
0
2
6
0
0
6
0
0
0
0