| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [noun] must be [vb pp] | 303 |
|
| 2 | [noun] must [not/n't] be [vb pp] | 271 |
|
| 3 | [coord] must [not/n't] be [vb pp] | 35 |
|
| 4 | [coord] [noun] must [not/n't] be | 16 |
|
