| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is [adv] [verb] that | 213 |
|
| 2 | [conj] it is [adv] [vb pp] that | 203 |
|
| 3 | [conj] it be [adv] established that | 10 |
|
| 4 | [conj] it [be] [adv] established that | 10 |
|
| 5 | [conj] it is [adv] established [conj] | 8 |
|
| 6 | [conj] [pron] is [adv] established that | 6 |
|
| 7 | [conj] it [is] [adv] established that | 6 |
|
| 8 | [conj] it is [adv] established [that] | 6 |
|
| 9 | [conj] it is [adv] established that | 6 |
|
| 10 | [conj] it is [adv] establish that | 6 |
|
