| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has [been] recognised that | 12 |
|
| 2 | [pron] has been recognised that | 12 |
|
| 3 | [pers pn] has [been] recognised that | 12 |
|
| 4 | it has [been] recognised that | 12 |
|
