| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] has [been] [verb] by a | 6 |
|
| 2 | [Wh pn] has [been] [vb pp] by a | 6 |
|
| 3 | [Wh pn] has been [verb] by a | 6 |
|
| 4 | who has [been] [verb] by a | 6 |
|
