| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [not/n't] been [vb pp] for | 14 |
|
| 2 | which have not be [vb pp] for | 11 |
|
| 3 | which had [not/n't] be [vb pp] for | 6 |
|
| 4 | which has [not/n't] be [vb pp] for | 5 |
|
