| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not know [conj] [adj] | 282 |
|
| 2 | not know [subord] [adj] | 233 |
|
| 3 | not [verb] if [adj] | 130 |
|
| 4 | [adv] know if [adj] | 107 |
|
| 5 | not know if [adj] | 97 |
|
