| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be operating [art] [adj] | 17 |
|
| 2 | be operating [art] [adj] | 15 |
|
| 3 | be operating a [adj] | 13 |
|
| 4 | be operating a [adj] | 9 |
|
| 5 | was operating [art] [adj] | 5 |
|
