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