| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be known that | 267 |
|
| 2 | it [be] known that | 267 |
|
| 3 | it 's [verb] that | 179 |
|
| 4 | it [is] known that | 153 |
|
| 5 | it 's [vb pp] that | 146 |
|
| 6 | it 's known [conj] | 7 |
|
| 7 | it 's know that | 6 |
|
| 8 | [pers pn] 's known that | 5 |
|
| 9 | it 's known that | 5 |
|
| 10 | [pron] 's known that | 5 |
|
