| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] [be] established that | 20 |
|
| 2 | it [be] established that the | 16 |
|
| 3 | it [vb -s] [be] that the | 9 |
|
| 4 | [vb -s] [be] established that the | 7 |
|
