| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv prt] at a [adj] rate | 12 |
|
| 2 | [verb] [adv prt] at a [adj] rate | 10 |
|
| 3 | [verb] [adv prt] at a rate of | 6 |
|
| 4 | [verb] [adv prt] at a rate [prep] | 6 |
|
| 5 | [verb] [adv prt] at a rate [prep] | 6 |
|
| 6 | [verb] [adv prt] at a rate of | 6 |
|
