| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] why do n't they [verb] | 7 |
|
| 2 | [noun] why do n't they [verb] | 7 |
|
| 3 | [noun] [adv] do n't they [vb infin] | 7 |
|
| 4 | [noun] [Wh adv] do n't they [verb] | 7 |
|
| 5 | [noun sg] [adv] do n't they [verb] | 6 |
|
| 6 | [noun] [adv] do n't they [verb] | 6 |
|
