| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [verb] be | 3545 |
|
| 2 | [verb] be [noun sg] | 3426 |
|
| 3 | must [verb] [noun sg] | 1198 |
|
| 4 | must be [noun sg] | 313 |
|
