| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] be | 74360 |
|
| 2 | [modal v] [adv] be | 74360 |
|
| 3 | must [adv] [be] | 2734 |
|
| 4 | must [adv] be | 2734 |
|
| 5 | must [adv] be | 2734 |
|
| 6 | must [adv] [be] | 2734 |
|
