| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] known that the [noun] | 25 |
|
| 2 | is well known that the [noun] | 19 |
|
| 3 | is [adv] known that the [noun sg] | 18 |
|
| 4 | is now known that the [noun] | 5 |
|
