| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been operate [prep] [art] | 18 |
|
| 2 | have be operate [prep] [art] | 18 |
|
| 3 | have be operating [prep] [art] | 16 |
|
| 4 | have be operate [prep] the | 9 |
|
| 5 | had be operate [prep] [art] | 7 |
|
| 6 | have be operate [prep] a | 6 |
|
| 7 | have be operate in [art] | 5 |
|
| 8 | have be operate in [art] | 5 |
|
| 9 | have be operate [prep] [art] | 5 |
|
