| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb base] they not [verb] | 6 |
|
| 2 | why [vb base] they not [verb] | 6 |
|
| 3 | why [vb base] they not [verb] | 6 |
|
| 4 | why [vb base] they not [vb infin] | 5 |
|
| 5 | why do they not [verb] | 5 |
|
