| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [verb] [be] | 782 |
|
| 2 | it [verb] [be] in | 221 |
|
| 3 | must [verb] [be] in | 90 |
|
| 4 | it must [be] in | 32 |
|
| 5 | it must [verb] in | 12 |
|
