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