| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have been [noun] [noun] | 14 |
|
| 2 | [pron] must have [been] [noun] [noun] | 14 |
|
| 3 | [pron] must have be [noun] [noun] | 14 |
|
| 4 | [pron] must have [be] [noun] [noun] | 14 |
|
| 5 | [pers pn] must have [be] [noun] [noun] | 9 |
|
| 6 | [pron] must have [be] [noun] [noun prp] | 9 |
|
| 7 | it must have [be] [noun] [noun] | 8 |
|
| 8 | it must have [be] [noun] [noun] | 8 |
|
| 9 | [pron] must have [be] [noun prp] [noun] | 8 |
|
| 10 | [pron] must have [be] [noun sg] [noun] | 6 |
|
