| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] did [pers pn] [verb] | 3694 |
|
| 2 | [Wh adv] [pers pn] [verb] back | 158 |
|
| 3 | did [pers pn] [verb] back | 56 |
|
