| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [not/n't] [adv] known | 12 |
|
| 2 | it 's [not/n't] [adv] known | 12 |
|
| 3 | it 's [not/n't] yet known | 11 |
|
| 4 | it 's [not/n't] yet known | 11 |
|
| 5 | it 's [not/n't] known [conj] | 7 |
|
| 6 | it 's [not/n't] known [subord] | 6 |
|
| 7 | it 's [not/n't] known if | 5 |
|
| 8 | it 's [not/n't] known if | 5 |
|
