| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] not [pron] [verb] | 2107 |
|
| 2 | [adv] [vb -s] not [pron] [verb] | 120 |
|
| 3 | [Wh adv] [vb -s] not [pron] [verb] | 112 |
|
| 4 | why [vb -s] not [pron] [verb] | 110 |
|
| 5 | why [vb -s] [adv] [pron] [verb] | 110 |
|
