| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [adv] known that | 19 |
|
| 2 | [pron] [is] [adv] [adv] known that | 19 |
|
| 3 | [pers pn] [is] [adv] [adv] known that | 19 |
|
| 4 | it [is] [adv] [adv] known that | 19 |
|
| 5 | [is] [adv] [adv] known that [noun] | 5 |
|
