| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] have been [verb] | 623 |
|
| 2 | [modal v] have been [verb] for | 290 |
|
| 3 | [modal v] [not/n't] have [verb] for | 78 |
|
| 4 | [not/n't] have been [verb] for | 19 |
|
| 5 | [modal v] [not/n't] have been for | 6 |
|
