| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [verb] at a time when | 10 |
|
| 2 | were [verb] at a time when | 10 |
|
| 3 | were [verb] at a time when | 10 |
|
| 4 | were [vb pp] at a time when | 8 |
|
