| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't [pers pn] ask | 19 |
|
| 2 | why did [not/n't] [pers pn] ask | 19 |
|
| 3 | why did [not/n't] [pers pn] ask | 18 |
|
| 4 | why did [not/n't] you ask | 14 |
|
