| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [verb] be | 782 |
|
| 2 | it [verb] be for | 94 |
|
| 3 | it must be for | 30 |
|
| 4 | must [verb] be for | 14 |
|
| 5 | it must [verb] for | 11 |
|
