| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] at [art] rate of | 23 |
|
| 2 | [was/were] [verb] at [art] rate of | 23 |
|
| 3 | [was/were] [verb] at a rate of | 13 |
|
| 4 | [was/were] [verb] at a rate of | 13 |
|
| 5 | was [verb] at [art] rate of | 12 |
|
| 6 | [was/were] [v-ing] at [art] rate of | 11 |
|
| 7 | [was/were] [vb pp] at [art] rate of | 11 |
|
| 8 | were [verb] at [art] rate of | 11 |
|
| 9 | [was/were] [verb] at the rate of | 10 |
|
| 10 | [was/were] [verb] at the rate of | 10 |
|
