| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] at the [noun] | 1256 |
|
| 2 | working at the [noun] | 161 |
|
| 3 | [was/were] working at the | 33 |
|
| 4 | [was/were] working at [noun] | 26 |
|
| 5 | [was/were] working the [noun] | 12 |
|
