| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | work that has been [verb] | 31 |
|
| 2 | work [that] has been [vb pp] | 29 |
|
| 3 | work [that] has been done | 19 |
|
| 4 | work [that] has been do | 19 |
|
