| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adv] been [verb] by | 564 |
|
| 2 | [Wh det] had [adv] been [verb] | 393 |
|
| 3 | [Wh det] had been [verb] by | 349 |
|
| 4 | [Wh det] had [adv] [verb] by | 6 |
|
