| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [verb] at a | 395 |
|
| 2 | [verb] at a rate | 172 |
|
| 3 | [noun pl] at a rate | 44 |
|
| 4 | [noun pl] [verb] a rate | 7 |
|
