| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has [been] [verb] | 3607 |
|
| 2 | it has [been] [vb pp] | 3465 |
|
| 3 | it [verb] [been] recognised | 22 |
|
| 4 | it have [been] recognised | 22 |
|
| 5 | [pron] has [been] recognised | 20 |
|
| 6 | it has [be] recognised | 17 |
|
| 7 | it [vb -s] [been] recognised | 17 |
|
| 8 | it has [been] recognise | 17 |
|
