| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] was [vb pp] at [art] time | 6 |
|
| 2 | [subord] [was/were] [vb pp] at the time | 6 |
|
| 3 | [subord] [was/were] [vb pp] at [art] time | 6 |
|
