| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] level [prep] | 678 |
|
| 2 | be at [adj] [prep] | 150 |
|
| 3 | be [adj] level [prep] | 77 |
|
| 4 | be at [adj] level | 40 |
|
