| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] at [adj] [noun] | 53 |
|
| 2 | must [be] [vb pp] at [adj] [noun] | 51 |
|
| 3 | must [be] avoid at [adj] [noun] | 9 |
|
| 4 | must [be] avoided at [adj] [noun] | 9 |
|
| 5 | must [be] make at [adj] [noun] | 5 |
|
| 6 | must [be] made at [adj] [noun] | 5 |
|
| 7 | must [be] at least [adj] [noun] | 39 |
|
| 8 | must [be] at [adv] [adj] [noun] | 39 |
|
| 9 | must [be] at [adv] [adj] [noun] | 39 |
|
| 10 | must [be] at least [adj] [noun] | 39 |
|
