| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how did [pron] [verb] | 1506 |
|
| 2 | how [verb] [pron] know | 1004 |
|
| 3 | how do [pron] know | 973 |
|
| 4 | [adv] did [pron] know | 319 |
|
| 5 | how [vb past] [pron] know | 291 |
|
