0
2
1
0
2
1
0
2
1
0
2
1
0
3
1
0
3
2
0
3
1
0
1
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
7
17
1
0
2
1
0
2
1
0
2
1
