2
2
2
0
0
0
4
0
0
4
0
0
2
2
0
4
0
0
2
0
4
2
2
0
0
0
0
0
2
0
0
0
2
2
0
0
0
2
0
0
0
0
4
2
0
0
0
0
0
0
0
2
4
2
2
0
4
2
15
2
0
0
0
4
2
2
2
0
4
0
2
2
2
2
0
0
2
2
0
2
0
2
25
0
0
2
0
0
0
4
2
4
2
0
2
0
0
2
0
0
4
0
2
2
2
2
6
21
0
2
2
12
2
4
2
0
2
0
2
2
0
2
2
4
4
2
0
2
0
2
0
4
2
0
0
2
2
0
2
2
0
0
4
0
2
0
2
0
2
2
0
2
0
2
2
2
2
0
0
2
0
4
2
2
2
0
2
0
0
2
2
0
2
4
0
0
4
0
0
0
2
0
0
0
2
2
0
2
2
0
2
2
0
4
2
4
0
2
0
2
2
0
2
2
0
0
0
0
0
2
0
0
0
4
2
0
2
2
0
0
0
0
0
2
0
0
0
2
2
0
4
2
0
2
0
0
0
4
0
0
2
4
2
0
0
2
0
0
0
2
0
0
2
2
2
2
2
0
0
2
2
2
0
0
0
0
2
2
0
2
2
0
0
2
2
0
0
0
2
0
2
2
2
0
2
0
0
0
