| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | rate [prep] over [num] per cent | 13 |
|
| 2 | rate [prep] over [num] per [no cls] | 13 |
|
| 3 | rate [prep] over [num] per [no cls] | 12 |
|
| 4 | rate of over [num] per [no cls] | 11 |
|
