| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do n't [pron] [vb infin] | 1949 |
|
| 2 | why do n't [pers pn] [vb infin] | 1930 |
|
| 3 | [adv] do n't they [vb infin] | 130 |
|
| 4 | why do n't they [verb] | 119 |
|
| 5 | why do [not/n't] they [vb infin] | 118 |
|
| 6 | why do n't they [vb infin] | 118 |
|
| 7 | why do not they [vb infin] | 118 |
|
| 8 | why do [adv] they [vb infin] | 118 |
|
| 9 | why do n't they [vb infin] | 118 |
|
| 10 | [Wh adv] do n't they [vb infin] | 118 |
|
| 11 | why [verb] n't they [vb infin] | 118 |
|
