| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [verb] in | 2901 |
|
| 2 | must [adv] be [verb] | 1610 |
|
| 3 | must be [verb] in | 944 |
|
| 4 | must [adv] [verb] in | 81 |
|
| 5 | must [adv] be in | 46 |
|
