| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [noun] be [vb pp] to | 1414 |
|
| 2 | [noun] must be [vb pp] to | 472 |
|
| 3 | [conj] [noun] must be [vb pp] | 454 |
|
| 4 | [conj] must be [vb pp] to | 30 |
|
