| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [noun] is | 101 |
|
| 2 | [modal v] [verb] [noun] is | 101 |
|
| 3 | must [verb] [noun] [be] | 15 |
|
| 4 | must [verb] [noun] be | 15 |
|
| 5 | must [verb] [noun] [is] | 11 |
|
| 6 | must [verb] [noun] is | 7 |
|
