| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must [vb infin] be [det] | 9 |
|
| 2 | [noun] must [verb] be [det] | 9 |
|
| 3 | [noun] must have be [det] | 8 |
|
| 4 | [noun] must have be [det] | 8 |
|
| 5 | [noun] must [verb] been [det] | 8 |
|
| 6 | [noun sg] must [verb] be [det] | 7 |
|
