| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] an [noun] [adj] per | 16 |
|
| 2 | [prep] an [noun sg] [adj] per | 16 |
|
| 3 | [prep] [art] average [adj] per | 11 |
|
| 4 | [prep] [art] average [adj] per | 11 |
|
| 5 | [prep] an average [adj] [no cls] | 11 |
|
| 6 | [prep] an average [adj] [unc] | 11 |
|
| 7 | [prep] an average [adj] per | 10 |
|
| 8 | [prep] an average [adj] per | 10 |
|
| 9 | [prep] a average [adj] per | 10 |
|
