| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how did [pron] know [pers pn] | 74 |
|
| 2 | how did [pron] know [Wh adv] | 19 |
|
| 3 | did [pron] know [Wh adv] [pers pn] | 16 |
|
