2
2
4
0
0
0
0
9
0
0
4
0
0
6
0
0
8
0
0
6
0
0
3
0
0
0
1
1
9
0
0
0
0
0
0
3
0
0
0
4
0
0
4
0
0
4
0
0
4
0
0