| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must be [verb] | 1448 |
|
| 2 | must [adv] be [verb] | 1062 |
|
| 3 | it must [adv] be | 222 |
|
| 4 | it [adv] be [verb] | 166 |
|
| 5 | it must [adv] [verb] | 145 |
|
