| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] [been] to [noun] | 10 |
|
| 2 | who [vb past] been to [noun] | 10 |
|
| 3 | who had [been] to [noun] | 7 |
|
| 4 | who [vb past] [been] to [noun prp] | 5 |
|
