| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know why [pron] [verb] | 348 |
|
| 2 | know why [pers pn] [verb] | 341 |
|
| 3 | [verb] why they [verb] | 257 |
|
| 4 | know [adv] they [verb] | 157 |
|
| 5 | [vb infin] why they [verb] | 105 |
|
| 6 | know why they [verb] | 76 |
|
| 7 | know why they [verb] | 54 |
|
