| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] why [verb] n't [pron] | 275 |
|
| 2 | [adv] [verb] n't [pron] do | 95 |
|
| 3 | why [verb] n't [pron] do | 91 |
|
| 4 | [adv] why [verb] [pron] do | 15 |
|
