| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [adv] that | 152 |
|
| 2 | it is [adv] known that | 149 |
|
| 3 | it is [adv] known that | 147 |
|
| 4 | it is [adv] [adv] known | 70 |
|
| 5 | is [adv] [adv] known that | 19 |
|
