| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been operate in | 17 |
|
| 2 | have be operate in | 17 |
|
| 3 | [verb] be operating in | 16 |
|
| 4 | [vb -s] be operate in | 6 |
|
| 5 | has be operate in | 5 |
|
| 6 | [vb base] be operate in | 5 |
|
| 7 | have be operate in | 5 |
|
