3
oil
2
3
2
2
5
1
6
2
2
4
3
1
2
1
1
2
3
2
2
2
9
5
2
3
4
3
4
6
5
3
3
4
2
13
3
5
4
8
5
1
2
3
4
1
2
4
3
2
2
