| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] not they come | 5 |
|
| 2 | why [verb] [adv] they come | 5 |
|
| 3 | why [verb] n't they come | 5 |
|
| 4 | why [verb] [not/n't] they come | 5 |
|
| 5 | why do [adv] they come | 5 |
|
