| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [vb pp] [adv] [noun] | 109 |
|
| 2 | must be [verb] [adv] [noun] | 11 |
|
| 3 | must [be] [vb pp] [adv] [noun] | 7 |
|
