| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [verb] | 1992 |
|
| 2 | it must [vb infin] | 1990 |
|
| 3 | it [modal v] mean | 616 |
|
| 4 | [pron] must mean | 48 |
|
| 5 | [pers pn] must mean | 39 |
|
| 6 | it must mean | 22 |
|
| 7 | it must mean | 22 |
|
