| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not have [det] [noun] | 293 |
|
| 2 | [modal v] have been [det] [noun] | 173 |
|
| 3 | [modal v] not have been [det] | 80 |
|
| 4 | [modal v] not have been [noun] | 39 |
|
| 5 | not have been [det] [noun] | 32 |
|
