| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] do n't they [vb infin] | 118 |
|
| 2 | [Wh adv] do they [vb infin] [prep] | 108 |
|
| 3 | do n't they [vb infin] [prep] | 22 |
|
