| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb past] be [verb] on | 59 |
|
| 2 | [pron] [vb past] be work on | 33 |
|
| 3 | [Wh pn] [vb past] be work [prep] | 14 |
|
| 4 | [Wh pn] [verb] be work on | 10 |
|
| 5 | [Wh pn] [vb past] [be] work on | 5 |
|
