4
no smoking
2
2
3
2
0
7
3
5
1
2
1
3
0
2
1
3
1
2
2
2
4
1
4
2
1
4
4
2
4
1
3
2
1
2
2
1
2
4
5
4
1
6
4
2
1
4
1
0
2
