| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] known [conj] | 149 |
|
| 2 | it is [adv] [conj] [noun] | 82 |
|
| 3 | is [adv] known [conj] [noun] | 39 |
|
| 4 | it is known [conj] [noun] | 34 |
|
