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