0
2
2
2
2
2
2
0
0
0
2
2
0
0
2
4
4
0
6
0
2
0
2
2
0
4
0
0
0
2
2
0
0
2
2
0
0
2
2
2
0
2
2
4
0
0
0
0
4
0
0
0
0
0
2
0
0
2
2
4
0
4
0
6
4
2
0
0
0
2
0
2
4
2
0
0
2
0
0
2
2
2
0
2
0
2
0
0
0
0
0
0
2
2
0
2
0
2
4
0
2
4
4
0
2
2
0
0
0
2
4
0
2
0
2
0
4
2
2
0
4
4
0
0
2
0
2
0
4
2
2
0
2
0
0
0
0
4
0
4
5
2
2
0
4
2
0
0
2
0
0
2
4
2
6
0
0
0
2
2
2
2
2
2
0
2
0
0
2
2
4
0
4
2
0
4
2
2
2
0
0
0
4
2
0
2
8
2
4
2
4
2
0
2
0
4
13
2
0
2
2
2
0
0
0
0
2
0
0
0
0
0
0
0
0
0
4
0
0
4
2
2
2
0
4
2
2
0
4
0
2
2
2
0
2
0
0
0
2
6
0
0
2
0
2
2
0
2
6
0
0
4
2
2
0
2
2
2
2
0
2
2
4
0
0
2
2
0
2
4
2
0
2
0
2
2
0
2
0
0
0
2
2
0
2
0
0
0
