| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [unc] why did n't you [verb] | 5 |
|
| 2 | [no cls] why did [not/n't] you [verb] | 5 |
|
| 3 | [unc] why did [not/n't] you [vb infin] | 5 |
|
