| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb base] [adv] [pron] come [prep] | 30 |
|
| 2 | why [vb base] n't [pron] come [prep] | 30 |
|
| 3 | why [vb base] [not/n't] [pron] come [prep] | 30 |
|
| 4 | why [vb base] not [pron] come [prep] | 30 |
|
