| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] why do n't they | 9 |
|
| 2 | [coord] why do [adv] they | 9 |
|
| 3 | [coord] why do not they | 9 |
|
| 4 | [coord] why do [not/n't] they | 9 |
|
| 5 | [coord] why do they [vb infin] | 31 |
|
| 6 | [coord] why do they [verb] | 31 |
|
| 7 | [coord] why do they [adv] | 5 |
|
