| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [that] | 352 |
|
| 2 | it is [adv] established | 63 |
|
| 3 | is [adv] established [that] | 38 |
|
| 4 | it is established [that] | 17 |
|
