| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what [pers pn] [modal v] [vb infin] | 360 |
|
| 2 | [verb] what [pers pn] must [vb infin] | 47 |
|
| 3 | know [pron] [pers pn] must [vb infin] | 16 |
|
| 4 | know what [pers pn] must [verb] | 13 |
|
| 5 | know what [pron] must [vb infin] | 13 |
|
