| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [modal v] have been [art] [noun] | 294 |
|
| 2 | [noun] [vb mod] have been [art] [noun] | 294 |
|
| 3 | [noun] must have [been] [art] [noun] | 49 |
|
| 4 | [noun] must have be [art] [noun] | 49 |
|
| 5 | [noun] must [verb] been [art] [noun] | 49 |
|
| 6 | [noun] must have [be] [art] [noun] | 49 |
|
| 7 | [noun] must have been [art] [noun] | 49 |
|
