| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [vb pp] at | 6660 |
|
| 2 | [Wh pn] [was/were] [vb pp] | 4047 |
|
| 3 | [Wh pn] [was/were] at | 197 |
|
