| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [num] per [unc] | 2518 |
|
| 2 | over [num] per [unc] | 744 |
|
| 3 | by over [num] [unc] | 20 |
|
| 4 | by over [num] per | 20 |
|
