| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to [noun] | 3348 |
|
| 2 | must be [verb] to | 714 |
|
| 3 | must [verb] to [noun] | 222 |
|
| 4 | must be [verb] [noun] | 122 |
|
