| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] be at a | 7 |
|
| 2 | [vb past] [pers pn] [be] at a | 7 |
|
| 3 | [vb past] [pron] was at a | 6 |
|
| 4 | [vb past] [pron] [was/were] at a | 6 |
|
