| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [verb] we know [noun] | 8 |
|
| 2 | how do we know [noun] | 8 |
|
| 3 | how [verb] we know [noun] | 8 |
|
| 4 | how do we know [noun] | 7 |
|
| 5 | how [vb base] we know [noun] | 7 |
|
| 6 | how [verb] we know [noun prp] | 6 |
|
