| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must be | 11000 |
|
| 2 | [noun] [adv] be | 10008 |
|
| 3 | [noun] must [adv] | 2157 |
|
| 4 | must [adv] be | 1920 |
|
