| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] known [det] | 5 |
|
| 2 | it be [adv] known that | 5 |
|
| 3 | it be [adv] known that | 5 |
|
| 4 | it be [adv] known [adj] | 5 |
|
