| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [vb pp] at [art] | 778 |
|
| 2 | being [vb pp] at [art] | 433 |
|
| 3 | were being [vb pp] at | 76 |
|
| 4 | were being [vb pp] [art] | 18 |
|
