| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] at [art] rate | 12 |
|
| 2 | been [verb] at [art] rate | 12 |
|
| 3 | been [verb] at the rate | 8 |
|
| 4 | been [v-ing] at [art] rate | 8 |
|
| 5 | been [verb] at the rate | 8 |
|
