5
0
4
0
4
0
6
0
4
0
6
0
7
0
7
0
6
0
6
0
6
0
7
0
6
0
6
0
6
0
4
0
4
0
6
0
7
0
8
0
3
0
6
0
4
0
6
0
7
0
5
0
6
0
