| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be working at the [noun] | 47 |
|
| 2 | be working at the [noun sg] | 37 |
|
| 3 | was working at the [noun] | 21 |
|
| 4 | been working at the [noun] | 11 |
|
| 5 | be working at the time | 9 |
|
| 6 | be working at the time | 9 |
|
| 7 | be working at the [noun prp] | 6 |
|
| 8 | were working at the [noun] | 5 |
|
