| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at [adv] [art] rate of | 8 |
|
| 2 | [verb] at [adv] [art] rate of | 8 |
|
| 3 | [verb] at [adv] the rate of | 8 |
|
| 4 | [verb] at twice [art] rate of | 7 |
|
