| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [vb pp] that | 1624 |
|
| 2 | have been [vb pp] that [art] | 710 |
|
| 3 | it have been [vb pp] [art] | 76 |
|
| 4 | it have [vb pp] that [art] | 52 |
|
