| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this must not be [vb pp] | 16 |
|
| 2 | this must not be [vb pp] | 16 |
|
| 3 | this must [not/n't] be [vb pp] | 16 |
|
| 4 | this must [adv] be [vb pp] | 12 |
|
| 5 | this must [adv] be taken | 5 |
|
