| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [pers pn] at the [noun] | 8 |
|
| 2 | [was/were] [v-ing] [pers pn] at the [noun sg] | 7 |
|
| 3 | was [v-ing] [pers pn] at the [noun] | 5 |
|
