| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [det] [noun] | 2033 |
|
| 2 | [vb mod] be [det] [noun] | 2033 |
|
| 3 | must be [adj] [noun] | 498 |
|
| 4 | must [be] [det] [noun] | 211 |
|
| 5 | must be [det] [noun] | 211 |
|
