| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why have n't [pron] [vb pp] [adv] | 9 |
|
| 2 | why [verb] n't [pers pn] [vb pp] [adv] | 9 |
|
| 3 | why [verb] n't [pron] [vb pp] [adv] | 9 |
|
| 4 | why [vb base] n't [pron] [vb pp] [adv] | 5 |
|
| 5 | why have n't [pron] [vb pp] [adv] | 5 |
|
