| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] not [pron] [verb] [adv] | 314 |
|
| 2 | why do not [pron] [verb] [adv] | 305 |
|
| 3 | why [vb past] not [pron] [verb] [adv] | 67 |
|
| 4 | [adv] did not [pron] [verb] [adv] | 66 |
|
| 5 | why did [adv] [pron] [verb] [adv] | 64 |
|
