| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | work that has been [vb pp] on | 9 |
|
| 2 | work that has been [verb] on | 9 |
|
| 3 | work that has been [verb] on | 9 |
|
| 4 | work that has been do on | 8 |
|
| 5 | work that has been done on | 8 |
|
