| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] [conj] | 1409 |
|
| 2 | it is [adv] [vb pp] [conj] | 1354 |
|
| 3 | it be [adv] established [conj] | 50 |
|
| 4 | it [be] [adv] established [conj] | 50 |
|
| 5 | it [is] [adv] established [conj] | 40 |
|
| 6 | it is [adv] established [conj] | 39 |
|
| 7 | [pron] is [adv] established [conj] | 39 |
|
| 8 | it is [adv] establish [conj] | 39 |
|
