| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | officer [Wh pn] [vb past] been [prep] | 5 |
|
| 2 | officer [Wh pn] had be [prep] | 5 |
|
| 3 | officer [Wh pn] [vb past] be [prep] | 5 |
|
| 4 | officer who [vb past] be [prep] | 5 |
|
