| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't [noun sg] | 20 |
|
| 2 | why do not [noun sg] | 15 |
|
| 3 | why [vb -s] not [noun sg] | 13 |
|
| 4 | why does not [noun sg] | 9 |
|
| 5 | why have not [noun sg] | 6 |
|
