| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] known that | 147 |
|
| 2 | [coord] it is [adv] that | 50 |
|
| 3 | [coord] it is [adv] known | 21 |
|
| 4 | [coord] it is known that | 21 |
|
