| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [vb pp] at [art] | 778 |
|
| 2 | were [v-ing] at [art] | 244 |
|
| 3 | were [vb pp] [v-ing] [art] | 190 |
|
| 4 | [vb pp] [v-ing] at [art] | 63 |
|
| 5 | were [vb pp] [v-ing] at | 9 |
|
