| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why not [verb] a [noun] [noun] | 14 |
|
| 2 | [Wh adv] not [vb infin] a [noun] [noun] | 13 |
|
| 3 | [Wh adv] not [verb] a [noun] [noun sg] | 13 |
|
| 4 | [Wh adv] not [verb] a [noun sg] [noun] | 12 |
|
