| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who had been [noun] [noun] | 21 |
|
| 2 | who have been [noun sg] [noun] | 11 |
|
| 3 | who have been [noun] [noun sg] | 11 |
|
| 4 | who have been [noun prp] [noun] | 8 |
|
| 5 | who have been [noun] [noun prp] | 7 |
|
