| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [be] in | 1723 |
|
| 2 | [be] working in | 499 |
|
| 3 | [vb past] [be] working | 284 |
|
| 4 | [vb past] working in | 20 |
|
