| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but when it [was/were] [vb pp] | 12 |
|
| 2 | but when it was [verb] | 12 |
|
| 3 | but when it [was/were] [verb] | 12 |
|
| 4 | but when it [was/were] [verb] | 12 |
|
