| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun pl] operate at [art] [adj] | 7 |
|
| 2 | [adj] [noun pl] operate at [art] [adj] | 5 |
|
| 3 | [noun pl] operate at [art] [adj] [noun sg] | 9 |
|
| 4 | [noun pl] operate at [art] [adj] [noun] | 9 |
|
| 5 | [noun pl] operate at [art] [adj] level | 6 |
|
| 6 | [noun pl] operate at [art] [adj] level | 6 |
|
