| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] at a [adj] rate | 18 |
|
| 2 | be [vb pp] at a [adj] rate | 14 |
|
| 3 | be [verb] at a [adj] rate | 12 |
|
| 4 | be [verb] at a [adj -er] rate | 6 |
|
