| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [verb] been [det] [noun] | 47 |
|
| 2 | it [vb mod] [verb] been [det] [noun] | 41 |
|
| 3 | it [modal v] [verb] been [det] [noun] | 41 |
|
| 4 | it must [verb] been [adj] [noun] | 37 |
|
| 5 | it must [verb] [been] [det] [noun] | 19 |
|
| 6 | [pers pn] must [verb] been [det] [noun] | 19 |
|
| 7 | it must [verb] been [det] [noun] | 19 |
|
| 8 | it must [verb] [be] [det] [noun] | 19 |
|
| 9 | it must [verb] been [det] [noun] | 19 |
|
| 10 | it must [verb] be [det] [noun] | 19 |
|
