| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been [verb] for a | 5 |
|
| 2 | have not [been] [verb] for a | 5 |
|
| 3 | have not [be] [vb pp] for a | 5 |
|
| 4 | have not be [verb] for a | 5 |
|
