4
strip
1
1
1
1
2
2
2
0
1
1
1
2
2
3
2
0
1
3
1
1
1
3
1
0
1
1
0
1
1
0
0
3
3
0
7
2
1
2
2
6
4
0
4
1
2
0
1
1
0
