| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] at a [adj -er] | 222 |
|
| 2 | at a [adj -er] level | 181 |
|
| 3 | [vb pp] at a level | 36 |
|
| 4 | [vb pp] at [adj -er] level | 11 |
|
| 5 | [vb pp] a [adj -er] level | 6 |
|
