| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which were [verb] at [art] time | 6 |
|
| 2 | which were [vb pp] at [art] time | 6 |
|
| 3 | which were [verb] at [art] time | 6 |
|
| 4 | which were [verb] at [art] time | 6 |
|
