| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [vb pp] that [art] | 1407 |
|
| 2 | [subord] it [is] [vb pp] that | 503 |
|
| 3 | [subord] it [is] [vb pp] [art] | 49 |
|
