| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adv] [vb pp] that | 44 |
|
| 2 | it 's [adv] known that | 10 |
|
| 3 | it 's now [vb pp] that | 8 |
|
| 4 | it 's generally [vb pp] that | 6 |
|
| 5 | it 's well [vb pp] that | 5 |
|
