| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [vb pp] a | 45 |
|
| 2 | who had been [vb pp] a | 22 |
|
| 3 | who have been given a | 20 |
|
| 4 | who has been [vb pp] a | 12 |
|
| 5 | who have been [vb pp] a | 6 |
|
