| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] [verb] that a | 107 |
|
| 2 | it be [adv] [vb pp] that a | 106 |
|
| 3 | it be [adv] established that [art] | 18 |
|
| 4 | it be [adv] established [conj] a | 5 |
|
| 5 | [pron] be [adv] established that a | 5 |
|
| 6 | [pers pn] be [adv] established that a | 5 |
|
| 7 | it be [adv] established that a | 5 |
|
| 8 | it be [adv] established that a | 5 |
|
| 9 | it be [adv] establish that a | 5 |
|
| 10 | it [be] [adv] established that a | 5 |
|
| 11 | it be [adv] established that a | 5 |
|
| 12 | it be [adv] established [that] a | 5 |
|
