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