| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't [pers pn] ask | 18 |
|
| 2 | [Wh adv] did n't [pers pn] ask | 18 |
|
| 3 | why did n't [pers pn] ask | 18 |
|
| 4 | [adv] did n't you ask | 15 |
|
