| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what [pers pn] must [vb infin] | 13 |
|
| 2 | know what [pers pn] must do | 7 |
|
| 3 | know what [pers pn] must do | 7 |
|
| 4 | knew what [pers pn] must [verb] | 7 |
|
| 5 | know what she must [verb] | 6 |
|
