| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [vb infin] | 5676 |
|
| 2 | it must [vb infin] | 1990 |
|
| 3 | [verb] it must | 423 |
|
| 4 | [verb] must [vb infin] | 234 |
|
