| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] often [verb] that [art] | 49 |
|
| 2 | it be often [verb] that [art] | 49 |
|
| 3 | it [is] often [verb] that [art] | 45 |
|
| 4 | it is often [verb] that [art] | 44 |
|
| 5 | it often [verb] that [art] [adj] | 9 |
|
| 6 | it often [verb] that [art] [adj] | 7 |
|
| 7 | it often [verb] that [art] [noun] | 7 |
|
| 8 | it often [verb] that [art] [noun sg] | 5 |
|
