| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [not/n't] [adv] known [conj] | 24 |
|
| 2 | it is not [adv] known [conj] | 24 |
|
| 3 | it is not [adv] known [conj] | 23 |
|
| 4 | it is [adv] [adv] known that | 17 |
|
| 5 | it is [adv] [adv] known [that] | 17 |
|
| 6 | it is [adv] [adv] known that | 17 |
|
| 7 | it is [adv] [adv] known [subord] | 17 |
|
| 8 | it is [adv] yet known [conj] | 14 |
|
| 9 | it is [adv] [adv] known whether | 11 |
|
| 10 | it is [adv] [adv] known whether | 11 |
|
| 11 | it is [adv] [adv] known [conj] | 10 |
|
| 12 | it is [adv] well known [conj] | 9 |
|
| 13 | it is [adv] [adv] known if | 5 |
|
| 14 | it is [adv] [adv] known if | 5 |
|
