| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] been [vb pp] that | 47 |
|
| 2 | it has been [verb] that | 43 |
|
| 3 | it 's been [verb] that | 9 |
|
| 4 | it [vb -s] been suggest that | 7 |
|
| 5 | it [vb -s] been suggested that | 7 |
|
| 6 | it [vb -s] been show that | 6 |
|
| 7 | it [vb -s] been shown that | 6 |
|
| 8 | it [vb -s] been do that | 5 |
|
| 9 | it [vb -s] been report that | 5 |
|
| 10 | it [vb -s] been reported that | 5 |
|
