| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [be] working on | 169 |
|
| 2 | who [verb] [be] on | 110 |
|
| 3 | who [verb] [be] working | 39 |
|
| 4 | who [be] working on | 28 |
|
