| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb mod] not [pron] [vb infin] | 536 |
|
| 2 | [vb mod] not [pron] [adv] [vb infin] | 167 |
|
| 3 | why [vb mod] [pron] [adv] [vb infin] | 80 |
|
| 4 | why [vb mod] not [pron] [adv] | 57 |
|
