| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't [pers pn] | 664 |
|
| 2 | [no cls] did n't [pers pn] | 12 |
|
| 3 | [no cls] why did [pers pn] | 8 |
|
| 4 | [no cls] why did n't | 6 |
|
