| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [was/were] at [art] time [Wh adv] | 12 |
|
| 2 | this [was/were] at [art] time when | 12 |
|
| 3 | this [was/were] at [art] time when | 12 |
|
| 4 | this [was/were] at [art] time [adv] | 12 |
|
