| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [adv] they [vb infin] [prep] | 8 |
|
| 2 | [Wh adv] do n't they [vb infin] [prep] | 8 |
|
| 3 | [Wh adv] do [not/n't] they [vb infin] [prep] | 8 |
|
| 4 | [Wh adv] do not they [vb infin] [prep] | 8 |
|
