| From\To | W1 | W2 | W3 | Availability |
| S1 | 10
| 4 (2) | 11 (At first) (12) | 14 |
| S2 | 12 (2) | 5 (8) | 8
| 10 |
| S3 | 9 (6) | 6
| 7
| 6 |
| Requirement | 8 | 10 | 12 |
|