| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb mod] have been the [noun] | 101 |
|
| 2 | [noun] [modal v] have been the [noun] | 101 |
|
| 3 | [noun] must have been [art] [noun] | 49 |
|
| 4 | [noun] must have been [art] [noun] | 49 |
|
| 5 | [noun] must have be the [noun] | 8 |
|
| 6 | [noun] must have been the [noun] | 8 |
|
| 7 | [noun] must have [been] the [noun] | 8 |
|
| 8 | [noun] must [verb] been the [noun] | 8 |
|
| 9 | [noun] must have [be] the [noun] | 8 |
|
| 10 | [noun] must have been the [noun] | 8 |
|
