| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [adv] be [vb pp] | 216 |
|
| 2 | it must [adv] be [verb] | 145 |
|
| 3 | it must not be [verb] | 74 |
|
| 4 | it must [not/n't] be [verb] | 74 |
|
| 5 | it must not be [verb] | 72 |
|
| 6 | it must also be [verb] | 67 |
|
| 7 | it must also be [verb] | 67 |
|
| 8 | it must [adv] be forget | 24 |
|
| 9 | it must [adv] be forgotten | 24 |
|
| 10 | it must [adv] be remember | 22 |
|
| 11 | it must [adv] be remembered | 22 |
|
| 12 | it must always be [verb] | 17 |
|
| 13 | it must always be [verb] | 17 |
|
| 14 | it must [adv] be said | 13 |
|
| 15 | it must [adv] be say | 13 |
|
| 16 | it must never be [verb] | 12 |
|
| 17 | it must never be [verb] | 12 |
|
| 18 | it must therefore be [verb] | 11 |
|
| 19 | it must therefore be [verb] | 11 |
|
| 20 | it must [adv] be borne | 9 |
|
| 21 | it must [adv] be bear | 9 |
|
| 22 | it must [adv] be assumed | 8 |
|
| 23 | it must [adv] be think | 8 |
|
| 24 | it must [adv] be assume | 8 |
|
| 25 | it must [adv] be thought | 8 |
|
| 26 | it must [adv] be noted | 7 |
|
| 27 | it must [adv] be use | 7 |
|
| 28 | it must [adv] be allowed | 7 |
|
| 29 | it must [adv] be allow | 7 |
|
| 30 | it must [adv] be used | 7 |
|
