| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] [vb past] be [prep] | 373 |
|
| 2 | officer [Wh pn] [vb past] [prep] | 35 |
|
| 3 | officer [Wh pn] [vb past] be | 24 |
|
| 4 | officer [Wh pn] be [prep] | 8 |
|
