7  7
-8  -8  0
8
0  0
2  0
4  0
6  0
6  6
4  6
2  6
0  6
33
0
0
0
0
0
33
0
0
0
0
0
0
0
33
0
0
0
0
0
33
0
0
0
0
0
0
0
33
0
0
0
0
0
33
0
0
0
0
0
0
0
33
0
0
0
0
0
33
33
0
0
0
0
0
33
0
0
0
0
0
0
0
33
0
0
0
0
0
33
0
0
0
0
0
0
0
33
0
0
0
0
0
33
0
0
0
0
0
0
0
33
0
0
0
0
0
33
0
5
8
0
5
8
0
0
2
6
3
7
2
0
0
2
0
0
0
2
0
0
2
0
0
0
2
0
0
2
0
0
0
2
0
0
2
0
0
0
2
0
0
6
3
3
3
7
0
