| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't know why [pron] | 483 |
|
| 2 | n't know [adv] they | 226 |
|
| 3 | n't [verb] why they | 111 |
|
| 4 | [adv] know why they | 71 |
|
| 5 | [not/n't] know why they | 68 |
|
| 6 | not know why they | 67 |
|
