| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been [vb pp] by a | 30 |
|
| 2 | they have been [verb] by a | 27 |
|
| 3 | they have been [verb] by a | 15 |
|
| 4 | they had been [verb] by a | 9 |
|
