| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do not know how [pron] | 507 |
|
| 2 | [verb] not know how [pron] | 507 |
|
| 3 | did not know [adv] [pron] | 251 |
|
| 4 | did not [verb] how [pron] | 82 |
|
| 5 | did not [vb infin] how [pron] | 82 |
|
| 6 | did [adv] know how [pron] | 52 |
|
| 7 | [vb past] not know how [pron] | 52 |
|
| 8 | did not know how [pron] | 52 |
|
