| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't they [adv] [vb infin] | 7 |
|
| 2 | why did not they [adv] [vb infin] | 7 |
|
| 3 | why did [not/n't] they [adv] [vb infin] | 7 |
|
| 4 | why did [adv] they [adv] [vb infin] | 7 |
|
