| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] did n't [pron] [verb] | 606 |
|
| 2 | [Wh adv] did [pron] [verb] back | 29 |
|
| 3 | did n't [pron] [verb] back | 8 |
|
