4
oil
2
2
2
1
1
2
1
1
3
4
1
2
2
1
1
2
4
5
2
2
1
1
2
1
2
2
2
2
2
1
2
0
3
2
0
3
2
2
2
2
5
1
0
0
0
1
0
3
1
