| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [verb] be | 782 |
|
| 2 | it [verb] be [noun prp] | 106 |
|
| 3 | it must be [noun prp] | 53 |
|
| 4 | must [verb] be [noun prp] | 45 |
|
| 5 | it must [verb] [noun prp] | 5 |
|
