2
2
2
2
0
0
2
0
0
0
2
0
2
2
4
0
2
2
2
0
0
0
0
2
0
2
2
2
2
2
4
2
0
2
0
2
2
2
0
2
2
0
0
0
0
2
2
4
2
0
2
2
0
0
4
0
0
0
2
2
2
2
0
2
2
2
0
2
0
0
2
0
0
0
0
2
0
0
27
0
0
2
2
0
92
4
2
2
2
4
0
0
0
2
2
0
4
2
2
2
0
0
2
0
2
2
2
2
0
4
2
0
2
2
0
2
2
0
2
2
0
0
0
2
4
2
0
0
2
2
0
2
2
2
0
2
2
2
0
2
2
0
2
0
0
0
0
2
0
0
2
2
0
0
0
2
2
2
0
0
0
0
0
2
2
4
0
2
2
2
0
2
2
2
2
2
0
4
2
0
2
2
2
2
0
4
2
2
4
2
0
98
0
2
0
0
2
2
0
2
2
0
2
2
0
2
0
0
2
4
0
0
2
0
2
0
0
0
2
2
2
0
2
0
2
2
2
4
2
4
2
2
2
0
2
0
2
0
2
2
2
2
0
0
2
2
0
2
0
2
2
4
0
2
2
0
4
2
2
0
2
2
0
0
4
0
2
4
0
4
2
2
2
2
2
0
2
0
0
0
0
0
2
2
0
0
2
0
