| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] [that] a | 72 |
|
| 2 | it is [adv] [vb pp] [that] a | 70 |
|
| 3 | it is [adv] established [that] [art] | 13 |
|
| 4 | it [be] [adv] established [that] a | 5 |
|
| 5 | it is [adv] establish [that] a | 5 |
|
| 6 | it be [adv] established [that] a | 5 |
|
| 7 | [pron] is [adv] established [that] a | 5 |
|
| 8 | it is [adv] established [conj] a | 5 |
|
| 9 | it [is] [adv] established [that] a | 5 |
|
