| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be often [vb pp] that [noun] | 43 |
|
| 2 | it [be] often [vb pp] that [noun] | 43 |
|
| 3 | it [is] often [vb pp] that [noun] | 42 |
|
| 4 | it is often [vb pp] that [noun] | 42 |
|
| 5 | it [be] often [vb pp] that [noun pl] | 17 |
|
| 6 | it [be] often said that [noun] | 14 |
|
| 7 | it [be] often [vb pp] that [noun sg] | 14 |
|
| 8 | it [be] often assumed that [noun] | 11 |
|
| 9 | it [be] often [vb pp] that [noun prp] | 9 |
|
| 10 | it [be] often argued that [noun] | 6 |
|
