| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [pron] [verb] | 1450 |
|
| 2 | it must be [verb] | 1448 |
|
| 3 | it must be [pron] | 118 |
|
| 4 | must be [pron] [verb] | 38 |
|
