| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been [vb pp] | 2668 |
|
| 2 | been [vb pp] [noun] | 1529 |
|
| 3 | to have [vb pp] [noun] | 1328 |
|
| 4 | to have been [noun] | 141 |
|
