| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been [vb pp] | 2668 |
|
| 2 | been [vb pp] [det] | 831 |
|
| 3 | to have [vb pp] [det] | 746 |
|
| 4 | to have been [det] | 82 |
|
