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