| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [pers pn] had been working on | 8 |
|
| 2 | [noun sg] [pers pn] had been working on | 5 |
|
| 3 | [pers pn] had been working on [prep] | 6 |
|
| 4 | [pers pn] had been working on [prep] | 6 |
|
