| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [modal v] [not/n't] [pron] | 819 |
|
| 2 | [modal v] [not/n't] [pron] [adv] | 256 |
|
| 3 | why [modal v] [pron] [adv] | 44 |
|
