| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] it be often [verb] that | 7 |
|
| 2 | [noun] it [be] often [vb pp] that | 7 |
|
| 3 | [noun] it is often [verb] that | 6 |
|
| 4 | [noun] it [is] often [verb] that | 6 |
|
| 5 | [noun sg] it [be] often [verb] that | 6 |
|
