| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't have been | 624 |
|
| 2 | [vb mod] n't have that | 79 |
|
| 3 | [vb mod] have been that | 31 |
|
| 4 | n't have been that | 7 |
|
