| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't know how [adv] i | 22 |
|
| 2 | n't know how [adv] i | 22 |
|
| 3 | n't know how long i | 19 |
|
| 4 | n't know how long i | 19 |
|
