| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [not/n't] known if | 27 |
|
| 2 | it [be] [not/n't] known if | 27 |
|
| 3 | it [is] [not/n't] known if | 22 |
|
| 4 | it 's [not/n't] known [conj] | 7 |
|
| 5 | it 's [not/n't] [verb] if | 6 |
|
| 6 | it 's [not/n't] [vb pp] if | 6 |
|
| 7 | [pron] 's [not/n't] known if | 5 |
|
| 8 | it 's [adv] known if | 5 |
|
| 9 | it 's [not/n't] know if | 5 |
|
| 10 | [pers pn] 's [not/n't] known if | 5 |
|
| 11 | it 's [not/n't] known if | 5 |
|
