| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] why do n't they | 17 |
|
| 2 | [adv] [Wh adv] did n't they | 9 |
|
| 3 | [adv] [Wh adv] do n't they | 8 |
|
| 4 | so [Wh adv] do n't they | 7 |
|
