| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [verb] at the [noun] | 557 |
|
| 2 | were [v-ing] at the [noun] | 147 |
|
| 3 | were working [prep] the [noun] | 54 |
|
| 4 | were working [prep] the [noun] | 54 |
|
| 5 | be working at the [noun] | 47 |
|
| 6 | [be] working at the [noun] | 47 |
|
| 7 | [was/were] working at the [noun] | 26 |
|
| 8 | were working at [art] [noun] | 6 |
|
| 9 | were work at the [noun] | 5 |
|
| 10 | were working at the [noun] | 5 |
|
