| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must not [vb infin] be | 29 |
|
| 2 | must not have be | 23 |
|
| 3 | must not [vb infin] been | 23 |
|
| 4 | must not [vb infin] be | 23 |
|
| 5 | must n't [vb infin] be | 6 |
|
| 6 | must not [vb infin] is | 5 |
|
