| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been that [noun] | 14 |
|
| 2 | [modal v] have been that [noun] | 14 |
|
| 3 | [modal v] have been that [noun] | 14 |
|
| 4 | [modal v] have been that [noun sg] | 14 |
|
| 5 | might have been that [noun] | 5 |
|
| 6 | might have been that [noun] | 5 |
|
