| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] by | 12687 |
|
| 2 | have been operate [prep] | 63 |
|
| 3 | have been operate [prep] | 63 |
|
| 4 | have be operate by | 6 |
|
| 5 | have [been] operate by | 6 |
|
| 6 | have been operate by | 6 |
|
| 7 | have [be] operate by | 6 |
|
| 8 | [verb] been operate by | 6 |
|
