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