| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] [verb] [prep] a | 472 |
|
| 2 | must be [verb] [prep] a | 472 |
|
| 3 | must [be] [vb pp] [prep] a | 455 |
|
| 4 | must [be] [verb] as a | 88 |
|
| 5 | must [be] [verb] by a | 87 |
|
| 6 | must [be] [verb] in a | 83 |
|
| 7 | must [be] [verb] to a | 41 |
|
| 8 | must [be] [verb] with a | 35 |
|
| 9 | must [be] accompany [prep] a | 30 |
|
| 10 | must [be] accompanied [prep] a | 30 |
|
| 11 | must [be] [verb] on a | 28 |
|
| 12 | must [be] see [prep] a | 25 |
|
| 13 | must [be] seen [prep] a | 25 |
|
| 14 | must [be] [verb] for a | 17 |
|
| 15 | must [be] [v-ing] [prep] a | 16 |
|
| 16 | must [be] make [prep] a | 15 |
|
| 17 | must [be] [verb] into a | 15 |
|
| 18 | must [be] made [prep] a | 15 |
|
| 19 | must [be] [verb] from a | 13 |
|
| 20 | must [be] based [prep] a | 12 |
|
| 21 | must [be] base [prep] a | 12 |
|
| 22 | must [be] [verb] within a | 11 |
|
| 23 | must [be] [verb] at a | 11 |
|
| 24 | must [be] treated [prep] a | 10 |
|
| 25 | must [be] treat [prep] a | 10 |
|
| 26 | must [be] take [prep] a | 9 |
|
| 27 | must [be] do [prep] a | 9 |
|
| 28 | must [be] regarded [prep] a | 9 |
|
| 29 | must [be] taken [prep] a | 9 |
|
| 30 | must [be] done [prep] a | 9 |
|
