| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [that] [art] | 122 |
|
| 2 | it is [adv] established [that] | 36 |
|
| 3 | is [adv] established [that] [art] | 13 |
|
| 4 | it is established [that] [art] | 13 |
|
