| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what [modal v] [verb] | 167 |
|
| 2 | [vb infin] what [modal v] [verb] | 116 |
|
| 3 | [vb infin] know what [verb] | 30 |
|
| 4 | [vb infin] know what [modal v] | 5 |
|
