0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
3
1
0
2
1
0
2
1
2
4
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
2
1
0
3
1
0
2
1
