| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] it [modal v] be [vb pp] | 570 |
|
| 2 | [noun sg] [pron] must be [vb pp] | 283 |
|
| 3 | [noun] it must be [vb pp] | 96 |
|
| 4 | [noun sg] it must be [verb] | 79 |
|
| 5 | [noun sg] it must [be] [vb pp] | 77 |
|
