| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] why did n't [pron] [verb] | 8 |
|
| 2 | [vb past] why did not [pron] [vb infin] | 8 |
|
| 3 | [vb past] why did not [pers pn] [verb] | 8 |
|
| 4 | said why did not [pron] [verb] | 7 |
|
