| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] did n't they [vb infin] | 43 |
|
| 2 | [adv] [Wh adv] did they [vb infin] | 24 |
|
| 3 | [adv] [Wh adv] did n't they | 9 |
|
