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