| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been working on this [noun] | 7 |
|
| 2 | [verb] been working on this [noun] | 7 |
|
| 3 | [verb] been working on this [noun sg] | 7 |
|
| 4 | [verb] been working on this [noun] | 7 |
|
