| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] long [adv] did | 13 |
|
| 2 | how long [adv] did | 13 |
|
| 3 | [Wh adv] long [adv] did | 13 |
|
| 4 | [Wh adv] long ago did | 12 |
|
| 5 | [Wh adv] long ago did | 12 |
|
