| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at this [noun] | 8171 |
|
| 2 | at [adj] level | 2686 |
|
| 3 | [prep] this level | 410 |
|
| 4 | [prep] this level | 410 |
|
| 5 | at this level | 298 |
|
