| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] | 11027 |
|
| 2 | must [be] made | 533 |
|
| 3 | must [be] taken | 428 |
|
| 4 | must [be] given | 262 |
|
| 5 | must [be] done | 221 |
|
| 6 | must [be] considered | 207 |
|
| 7 | must [be] seen | 200 |
|
| 8 | must [be] said | 195 |
|
| 9 | must [be] remembered | 182 |
|
| 10 | must [be] used | 158 |
|
| 11 | must [be] kept | 148 |
|
| 12 | must [be] paid | 117 |
|
| 13 | must [be] allowed | 109 |
|
| 14 | must [be] set | 96 |
|
| 15 | must [be] found | 91 |
|
| 16 | must [be] regarded | 77 |
|
| 17 | must [be] treated | 77 |
|
| 18 | must [be] added | 77 |
|
| 19 | must [be] based | 73 |
|
| 20 | must [be] stressed | 72 |
|
| 21 | must [be] provided | 71 |
|
| 22 | must [be] held | 70 |
|
| 23 | must [be] sent | 69 |
|
| 24 | must [be] accompanied | 67 |
|
| 25 | must [be] admitted | 65 |
|
| 26 | must [be] understood | 60 |
|
| 27 | must [be] borne | 59 |
|
| 28 | must [be] maintained | 58 |
|
| 29 | must [be] carried | 57 |
|
| 30 | must [be] noted | 56 |
|
