| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be operating at [adj] | 8 |
|
| 2 | [noun sg] be operating at [adj] | 5 |
|
| 3 | be operating at [adj] [noun] | 9 |
|
| 4 | be operating at [adj] [noun sg] | 7 |
|
