| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which had been [verb] for the | 13 |
|
| 2 | which had be [verb] for the | 13 |
|
| 3 | which had [been] [verb] for the | 13 |
|
| 4 | which had [be] [vb pp] for the | 12 |
|
