| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is often [verb] [conj] | 163 |
|
| 2 | it is often [verb] that | 150 |
|
| 3 | it is [verb] that [conj] | 91 |
|
| 4 | is often [verb] that [conj] | 8 |
|
