| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] known that [noun pl] | 19 |
|
| 2 | it [is] [adv] known that [noun pl] | 19 |
|
| 3 | it [be] [adv] known that [noun pl] | 19 |
|
| 4 | it [be] [adv] known that [noun pl] | 19 |
|
| 5 | it is [adv] known that [noun pl] | 18 |
|
| 6 | it [be] well known that [noun pl] | 16 |
|
