4
drinking
2
1
2
3
1
2
0
2
3
1
4
3
2
2
1
1
1
2
0
2
1
2
2
1
1
1
0
2
5
5
1
0
1
4
2
2
2
0
6
1
0
1
4
5
3
5
0
0
0
