0
1
2
3
4
5
6
7
8
9
10
0
0
0
0
0
0
0
0
0
0
0
7
0
0
7
0
0
7
0
0
7
0
0
7
0
0
0
0
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
7
0
0
7
7
0
0
7
7
7
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0