| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] know [is] [conj] | 7 |
|
| 2 | [verb] [not/n't] know [is] [conj] | 7 |
|
| 3 | do [not/n't] know [is] [conj] | 7 |
|
| 4 | [vb base] [not/n't] know [is] [conj] | 7 |
|
| 5 | [not/n't] know [is] [conj] [pron] | 6 |
|
