| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't know if i [verb] [prep] | 6 |
|
| 2 | [not/n't] know if i [vb base] [prep] | 6 |
|
| 3 | [not/n't] know if i [verb] [prep] | 5 |
|
