| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it be often [verb] that | 17 |
|
| 2 | [conj] it [be] often [verb] that | 17 |
|
| 3 | [conj] it [is] often [verb] that | 16 |
|
| 4 | [conj] it is often [verb] that | 14 |
|
