| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been at [noun] | 166 |
|
| 2 | [vb past] work at [noun] | 35 |
|
| 3 | [vb past] been work at | 21 |
|
| 4 | been work at [noun] | 18 |
|
| 5 | [vb past] been work [noun] | 6 |
|
