| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know is that [pron] | 6 |
|
| 2 | [not/n't] know is [that] [pron] | 6 |
|
| 3 | n't know is [conj] [pron] | 6 |
|
| 4 | [not/n't] know is that [pron] | 6 |
|
