| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not know [adv] [pron] | 1844 |
|
| 2 | not know how [pron] | 522 |
|
| 3 | know how [adv] [pron] | 251 |
|
| 4 | not know how [adv] | 181 |
|
| 5 | not how [adv] [pron] | 9 |
|
