| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [vb pp] at a | 216 |
|
| 2 | were [vb pp] at a | 180 |
|
| 3 | were [vb pp] at an | 36 |
|
| 4 | were arrested at a | 9 |
|
| 5 | were taken at a | 6 |
|
| 6 | were used at a | 6 |
|
| 7 | were made at a | 5 |
|
