| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [be] [adj] [noun] | 122 |
|
| 2 | must [vb infin] at [adj] [noun] | 24 |
|
| 3 | [vb infin] [be] at [adj] [noun] | 15 |
|
| 4 | must [vb infin] [be] at [adj] | 6 |
|
| 5 | must [be] at [adj] [noun] | 6 |
|
