| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] have been [vb pp] to a | 14 |
|
| 2 | which have been [verb] to a | 13 |
|
| 3 | [Wh det] had been [verb] to a | 6 |
|
| 4 | [Wh det] has been [verb] to a | 5 |
|
