| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did [not/n't] [pers pn] | 667 |
|
| 2 | [no cls] did [not/n't] [pers pn] | 12 |
|
| 3 | [no cls] why did [pers pn] | 8 |
|
| 4 | [no cls] why did [not/n't] | 6 |
|
