| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] that | 1206 |
|
| 2 | it is [adv] [vb pp] that | 1169 |
|
| 3 | it be [adv] known that | 189 |
|
| 4 | it [be] [adv] known that | 189 |
|
| 5 | it [is] [adv] known that | 157 |
|
| 6 | it is [adv] known [conj] | 149 |
|
| 7 | it is [adv] known that | 149 |
|
| 8 | [pron] is [adv] known that | 147 |
|
| 9 | [pers pn] is [adv] known that | 147 |
|
| 10 | it is [adv] known that | 147 |
|
| 11 | it is [adv] know that | 147 |
|
