| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | officers have been | 114 |
|
| 2 | officers [vb base] been | 55 |
|
| 3 | officers have been | 55 |
|
| 4 | officers had been | 52 |
|
| 5 | officers [vb past] been | 52 |
|
| 6 | officers [vb -s] been | 7 |
|
| 7 | officers has been | 7 |
|
