| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [was/were] [vb pp] at the time | 14 |
|
| 2 | [Wh det] was [verb] at the time | 13 |
|
| 3 | what [was/were] [verb] at the time | 11 |
|
| 4 | which [was/were] [verb] at the time | 6 |
|
