7
1
2
9
0
0
6
0
0
8
0
0
6
0
0
9
0
0
4
0
0
2
1
4
4
2
4
9
0
0
7
0
0
2
1
2
4
0
0
4
0
0
6
0
0
10
0
0
8
2
1
7
0
0
7
0
0
3
0
0