| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and why [vb past] not they | 5 |
|
| 2 | and why did not they | 5 |
|
| 3 | and why do not they | 5 |
|
| 4 | and why [verb] not they | 5 |
|
| 5 | and why [verb] not they | 5 |
|
| 6 | and why [verb] n't they | 5 |
|
