| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of approximately [num] per [unc] | 10 |
|
| 2 | [noun sg] of approximately [num] per [unc] | 10 |
|
| 3 | of approximately [num] per [unc] [prep] | 5 |
|
| 4 | of approximately [num] per [unc] [prep] | 5 |
|
