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