| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] had been [verb] by a | 20 |
|
| 2 | [Wh det] had [been] [verb] by a | 20 |
|
| 3 | [Wh det] had [been] [vb pp] by a | 20 |
|
| 4 | which had [been] [verb] by a | 19 |
|
