| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which be [vb pp] at [art] time | 13 |
|
| 2 | which [be] [vb pp] at the time | 11 |
|
| 3 | which [was/were] [vb pp] at [art] time | 8 |
|
| 4 | which were [vb pp] at [art] time | 6 |
|
