3
oil
2
2
1
1
1
2
1
3
6
2
4
1
1
1
1
2
1
7
5
5
5
2
1
0
3
2
2
3
1
3
8
4
6
1
2
2
2
5
1
2
3
6
3
4
3
2
3
3
4
