| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they were [vb pp] at the [noun] | 29 |
|
| 2 | they were [vb pp] at the [noun sg] | 25 |
|
| 3 | they were [vb pp] at the time | 9 |
|
| 4 | they were [vb pp] at the time | 9 |
|
