| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [not/n't] know that | 29 |
|
| 2 | be [not/n't] to know [that] | 24 |
|
| 3 | be not know [that] | 22 |
|
| 4 | was [not/n't] know [that] | 20 |
|
| 5 | be n't know [that] | 7 |
|
| 6 | be [not/n't] known [that] | 5 |
|
