| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [prep] [art] | 4049 |
|
| 2 | [verb] operate [prep] [art] | 202 |
|
| 3 | [verb] been operate [prep] | 63 |
|
| 4 | been operate [prep] [art] | 20 |
|
| 5 | [verb] been operate [art] | 8 |
|
