| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] why they do [adv] | 41 |
|
| 2 | know why [pers pn] do [adv] | 38 |
|
| 3 | know why [pron] do [adv] | 38 |
|
| 4 | [vb infin] why they do [adv] | 21 |
|
| 5 | know why they [verb] [adv] | 16 |
|
| 6 | know [adv] they do [adv] | 13 |
|
| 7 | know [Wh adv] they do [adv] | 12 |
|
| 8 | know why they do [adv] | 12 |
|
| 9 | know why they do [adv] | 11 |
|
| 10 | know why they do [adv] | 11 |
|
