| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] why did n't | 73 |
|
| 2 | so why did [not/n't] | 28 |
|
| 3 | well why did [not/n't] | 22 |
|
| 4 | then why did [not/n't] | 20 |
|
