| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [v-ing] [pron] [prep] | 1010 |
|
| 2 | [be] [v-ing] [pron] at | 185 |
|
| 3 | be [v-ing] [pron] at | 185 |
|
| 4 | [was/were] [v-ing] [pron] at | 60 |
|
| 5 | was [verb] [pron] at | 59 |
|
