| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] at the | 816 |
|
| 2 | [was/were] [v-ing] at [pers pn] | 585 |
|
| 3 | [was/were] [v-ing] [pers pn] the | 83 |
|
| 4 | [v-ing] at [pers pn] the | 9 |
|
