| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [no cls] why did [not/n't] [pers pn] [verb] | 6 |
|
| 2 | [no cls] why did n't [pers pn] [verb] | 6 |
|
| 3 | [no cls] why did [adv] [pers pn] [verb] | 6 |
|
| 4 | [no cls] why did not [pers pn] [verb] | 6 |
|
