2
0
2
0
2
2
0
2
0
2
0
0
0
2
0
0
2
2
0
6
4
0
0
0
2
0
0
0
0
0
0
2
2
0
0
2
0
0
2
0
1
0
4
4
1
2
1
6
0
0
8
2
2
0
2
0
2
0
4
2
0
1
0
0
2
2
2
2
2
4
0
2
0
0
2
0
2
2
0
0
4
1
0
0
2
4
2
0
0
2
2
2
0
2
2
2
0
0
0
2
2
1
0
2
0
2
2
0
0
0
0
2
0
0
0
2
0
2
2
0
0
2
0
2
0
0
2
4
2
2
2
0
2
0
1
7
2
0
0
0
2
0
2
4
2
0
0
2
2
2
2
0
3
0
0
2
1
0
0
2
1
0
1
0
2
0
1
2
0
0
0
2
0
0
0
0
0
0
2
2
1
0
0
2
2
0
2
2
0
0
1
0
0
1
0
1
0
2
4
2
2
0
2
2
1
4
0
0
4
2
4
0
2
2
0
0
2
2
1
3
1
0
2
0
2
0
0
2
2
2
2
2
0
2
0
2
4
2
0
2
2
1
0
2
0
2
0
2
2
0
2
2
2
1
2
2
2
0
2
2
1
0
6
2
2
1
2
0
2
1
0
2
2
2
0
0
0
0
0
0
1
2
2
1
2
0
0
0
