| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [modal v] have been a [noun] | 52 |
|
| 2 | [det] [vb mod] have been a [noun] | 52 |
|
| 3 | [det] [modal v] have been a [noun sg] | 51 |
|
| 4 | that [modal v] have been a [noun] | 26 |
|
| 5 | this [modal v] have been a [noun] | 26 |
|
| 6 | [det] would have been a [noun] | 23 |
|
| 7 | [det] would have been a [noun] | 23 |
|
| 8 | [det] may have been a [noun] | 8 |
|
| 9 | [det] may have been a [noun] | 8 |
|
| 10 | [det] must have been a [noun] | 7 |
|
| 11 | [det] could have been a [noun] | 7 |
|
| 12 | [det] must have been a [noun] | 7 |
|
| 13 | [det] could have been a [noun] | 7 |
|
