521
0
0
2
0
0
2
0
0
4
0
0
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
2
0
0
