| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't [pron] [adv] | 207 |
|
| 2 | why [verb] n't [pron] [vb pp] | 134 |
|
| 3 | [verb] n't [pron] [vb pp] [adv] | 52 |
|
| 4 | why [verb] [pron] [vb pp] [adv] | 38 |
|
