| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which had been [noun] | 27 |
|
| 2 | [Wh det] had been [noun prp] | 22 |
|
| 3 | what had been [noun] | 13 |
|
| 4 | [Wh det] had been [noun sg] | 10 |
|
| 5 | [Wh det] had been [noun pl] | 6 |
|
