Rank | Variables |
1 | Liquid Fuels |
2 | Solid Fuels |
3 | Liquid Fuels ∩ Solid Fuels |
4 | Solid Fuels ∩ Gas Flares |
5 | Cement ∩ Gas Flares |
6 | Cement |
7 | Gas Fuels |
8 | Solid Fuels ∩ Cement |
9 | Solid Fuels ∩ Gas Fuels |
10 | Liquid Fuels ∩ Gas Fuels |
11 | Liquid Fuels ∩ Cement |
12 | Gas Flares |