| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have been | 4599 |
|
| 2 | [vb mod] [not/n't] have been | 2118 |
|
| 3 | [vb mod] not have been | 2115 |
|
| 4 | [vb mod] n't have [be] | 630 |
|
| 5 | [vb mod] n't have be | 630 |
|
| 6 | [modal v] n't have been | 624 |
|
| 7 | [vb mod] n't [verb] been | 624 |
|
| 8 | [vb mod] n't have [been] | 624 |
|
