| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did [not/n't] [pron] [vb infin] | 606 |
|
| 2 | then why did [pron] [vb infin] | 39 |
|
| 3 | then why did [not/n't] [pron] | 19 |
|
