| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [vb pp] at [adj] [noun] | 51 |
|
| 2 | must be [vb pp] at [adj] [noun] | 51 |
|
| 3 | must [be] [vb pp] at [det] [noun] | 42 |
|
| 4 | must [be] [vb pp] at [adj] [noun pl] | 29 |
|
| 5 | must [be] [vb pp] at all [noun] | 23 |
|
| 6 | must [be] [vb pp] at all [noun] | 23 |
|
| 7 | must [be] [vb pp] at [adj] [noun sg] | 21 |
|
| 8 | must [be] [vb pp] at [adj] cost | 17 |
|
| 9 | must [be] [vb pp] at [adj] costs | 15 |
|
| 10 | must [be] [vb pp] at this [noun] | 11 |
|
| 11 | must [be] [vb pp] at this [noun] | 11 |
|
| 12 | must [be] avoided at [adj] [noun] | 9 |
|
| 13 | must [be] [vb pp] at [adj] stage | 6 |
|
| 14 | must [be] [vb pp] at [adj] stage | 6 |
|
| 15 | must [be] [vb pp] at [adj] times | 5 |
|
| 16 | must [be] [vb pp] at [adj] [noun] | 5 |
|
| 17 | must [be] [vb pp] at [adj] time | 5 |
|
| 18 | must [be] made at [adj] [noun] | 5 |
|
