| Value | Category | Cases | |
|---|---|---|---|
| Bio gas | 1 |
10%
|
|
| Bottles | 1 |
10%
|
|
| Electricity | 1 |
10%
|
|
| Maize combs | 1 |
10%
|
|
| Maize kobs | 2 |
20%
|
|
| Maize shavings | 1 |
10%
|
|
| None | 2 |
20%
|
|
| Nothing | 1 |
10%
|