| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] rate [prep] [num] per | 289 |
|
| 2 | [noun] [prep] over [num] per | 98 |
|
| 3 | rate [prep] over [num] per | 13 |
|
| 4 | [noun] rate [prep] over [num] | 10 |
|
