| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] 20 per | 124 |
|
| 2 | [noun] [prep] [art] 20 | 111 |
|
| 3 | [prep] [art] 20 per | 50 |
|
| 4 | [noun] [prep] [art] per | 22 |
|
