| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [vb infin] [adv] | 29810 |
|
| 2 | why [not/n't] [vb infin] | 848 |
|
| 3 | why [not/n't] [adv] | 102 |
|
| 4 | why [vb infin] [adv] | 84 |
|
