0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
6
2
0
2
1
0
2
2
0
2
1
1
9
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
1
3
1
0
2
2
