| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] why [verb] n't | 21 |
|
| 2 | [vb base] why [vb base] not | 19 |
|
| 3 | [vb base] why do not | 19 |
|
| 4 | [vb base] why do not | 17 |
|
| 5 | look why [verb] not | 5 |
|
| 6 | know why [verb] not | 5 |
|
