| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] not they | 58 |
|
| 2 | why [vb past] [not/n't] they | 58 |
|
| 3 | why [vb past] n't they | 58 |
|
| 4 | why did [adv] they | 51 |
|
| 5 | why had [adv] they | 7 |
|
