| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] at [art] [adj] levels [prep] | 9 |
|
| 2 | [adv] at [art] [adj] levels [prep] | 9 |
|
| 3 | [adv] at [art] [adj] levels of | 7 |
|
| 4 | [adv] at [art] [adj] levels of | 7 |
|
