| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't know [adv] i | 306 |
|
| 2 | n't know when [pron] | 88 |
|
| 3 | n't [verb] when i | 31 |
|
| 4 | [adv] know when i | 23 |
|
| 5 | not know when i | 18 |
|
| 6 | [not/n't] know when i | 18 |
|
