| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have [vb pp] [noun] | 493 |
|
| 2 | who have been [vb pp] | 447 |
|
| 3 | have been [vb pp] [noun] | 228 |
|
| 4 | who have been [noun] | 23 |
|
