| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at [art] rate of | 214 |
|
| 2 | be [verb] at [art] rate | 145 |
|
| 3 | be at [art] rate of | 12 |
|
| 4 | be [verb] [art] rate of | 9 |
|
