| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [verb] [conj] | 4469 |
|
| 2 | it is [vb pp] [conj] | 4275 |
|
| 3 | it be established [conj] | 47 |
|
| 4 | it [be] established [conj] | 47 |
|
| 5 | [pron] is established [conj] | 21 |
|
| 6 | it is establish [conj] | 20 |
|
| 7 | it [is] established [conj] | 19 |
|
