| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] at [noun] | 377 |
|
| 2 | [v-ing] [pers pn] at [noun] | 160 |
|
| 3 | [was/were] [v-ing] [pers pn] [noun] | 69 |
|
| 4 | [was/were] [v-ing] [pers pn] at | 39 |
|
| 5 | [was/were] [pers pn] at [noun] | 14 |
|
