| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] at [art] [adj] rate | 8 |
|
| 2 | be [v-ing] at [art] [adj] rate | 8 |
|
| 3 | be [v-ing] at a [adj] rate | 7 |
|
| 4 | be [v-ing] at [art] [adj] rate | 7 |
|
