| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't they [vb infin] [adj] | 7 |
|
| 2 | why do [not/n't] they [vb infin] [adj] | 7 |
|
| 3 | why do [not/n't] they [vb infin] [adj] | 6 |
|
| 4 | why [vb base] [not/n't] they [vb infin] [adj] | 6 |
|
