| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] known that | 157 |
|
| 2 | [noun] it [is] [adv] that | 23 |
|
| 3 | [noun] it [is] [adv] known | 9 |
|
| 4 | [noun] it [is] known that | 6 |
|
