| Sources | Destinations | Supply | |||||||
| D1 |
| D2 |
| D3 |
| D4 |
| ||
| S1 | 10 |
|
|
|
|
| 10 |
| 20 |
|
| 10 |
| 30 |
| 50 |
| 10 | ||
| S2 |
|
| 18 |
| 6 |
| 14 |
| 38 |
|
| 40 |
| 20 |
| 20 |
| 10 | ||
| S3 |
|
|
|
| 16 |
|
|
| 16 |
|
| 30 |
| 20 |
| 15 |
| 10 | ||
| Demand | 10 |
| 18 |
| 22 |
| 24 |
|
|