| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [vb pp] by a | 26 |
|
| 2 | who have been [verb] by a | 26 |
|
| 3 | who had been [verb] by a | 15 |
|
| 4 | who has been [verb] by a | 6 |
|
