| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it 's [adv] [vb pp] that [noun] | 11 |
|
| 2 | it 's [adv] [vb pp] that [noun prp] | 6 |
|
| 3 | it 's [adv] known that [noun] | 5 |
|
