| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't have been [prep] | 38 |
|
| 2 | [vb mod] have been [prep] that | 24 |
|
| 3 | [vb mod] n't have been that | 7 |
|
| 4 | n't have been [prep] that | 6 |
|
