| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] did n't they | 51 |
|
| 2 | [Wh adv] did not they | 51 |
|
| 3 | [Wh adv] did [not/n't] they | 51 |
|
| 4 | why did [adv] they | 51 |
|
