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