| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] known that | 194 |
|
| 2 | it be [adv] known that | 194 |
|
| 3 | it [is] [adv] known that | 160 |
|
| 4 | it 's [adv] [verb] that | 70 |
|
| 5 | it 's [adv] [vb pp] that | 47 |
|
| 6 | it 's [adv] known [conj] | 17 |
|
| 7 | it 's [adv] known that | 11 |
|
| 8 | [pers pn] 's [adv] known that | 11 |
|
| 9 | it 's [adv] know that | 11 |
|
| 10 | [pron] 's [adv] known that | 11 |
|
