| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] at the | 816 |
|
| 2 | [coord] [v-ing] at the | 344 |
|
| 3 | [coord] [was/were] [v-ing] the | 119 |
|
| 4 | [coord] [was/were] [v-ing] at | 48 |
|
| 5 | [coord] [was/were] at the | 21 |
|
