| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it be [adv] established that | 10 |
|
| 2 | [conj] it be [adv] established that | 10 |
|
| 3 | [conj] it is [adv] established that | 6 |
|
| 4 | [coord] it be [adv] established that | 5 |
|
