| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb past] they have been | 5 |
|
| 2 | who [vb past] they [verb] been | 5 |
|
| 3 | [Wh pn] [vb past] they had been | 5 |
|
| 4 | [Wh pn] [vb past] they [vb past] been | 5 |
|
