| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] at [det] | 1424 |
|
| 2 | were [v-ing] at | 665 |
|
| 3 | were [v-ing] [det] | 629 |
|
| 4 | were at [det] | 109 |
|
