| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [verb] [that] | 4088 |
|
| 2 | it [is] [vb pp] [that] | 3957 |
|
| 3 | it [be] established [that] | 43 |
|
| 4 | it [is] established [conj] | 19 |
|
| 5 | [pron] [is] established [that] | 17 |
|
| 6 | it [is] establish [that] | 17 |
|
