| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [be] at the | 156 |
|
| 2 | [be] work at the | 60 |
|
| 3 | [vb past] work at the | 30 |
|
| 4 | [vb past] [be] work at | 21 |
|
