| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at [art] [adj -er] level [prep] | 19 |
|
| 2 | [verb] at a [adj -er] level [prep] | 18 |
|
| 3 | [verb] at a [adj -er] level [prep] | 18 |
|
| 4 | [verb] at [art] [adj -er] level of | 14 |
|
| 5 | [verb] at [art] higher level [prep] | 10 |
|
| 6 | [verb] at [art] lower level [prep] | 7 |
|
| 7 | [v-ing] at [art] [adj -er] level [prep] | 6 |
|
