| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] known that | 194 |
|
| 2 | it [be] [adv] that [noun pl] | 48 |
|
| 3 | [be] [adv] known that [noun pl] | 20 |
|
| 4 | it [be] known that [noun pl] | 15 |
|
