| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [v-ing] [prep] [noun] | 5039 |
|
| 2 | [was/were] [v-ing] [prep] [noun] | 5033 |
|
| 3 | [was/were] [verb] at [noun] | 2650 |
|
| 4 | [be] [v-ing] at [noun] | 1075 |
|
| 5 | [was/were] [v-ing] at [noun] | 377 |
|
