| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't know if it 's [adv] | 15 |
|
| 2 | [not/n't] know if it 's [adv] | 15 |
|
| 3 | [not/n't] know if it 's [adv] | 15 |
|
| 4 | [not/n't] know if it 's [adv] | 13 |
|
