| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at a [adj] per | 5 |
|
| 2 | at least a [adj] per | 8 |
|
| 3 | at [adv] a [adj] per | 8 |
|
| 4 | at least a [adj] per | 8 |
|
| 5 | at [adv] a [adj] per | 8 |
|
| 6 | at a [adj] [adj] per | 11 |
|
| 7 | at a [adj] [adj] per | 10 |
|
| 8 | at a [adj] [num] per | 11 |
|
| 9 | at a [adj] [adj] per | 11 |
|
| 10 | at a [adj] per [unc] | 10 |
|
| 11 | at a [adj] per cent | 10 |
|
| 12 | at a [adj] per [no cls] | 10 |
|
| 13 | at a [adj] per cent | 10 |
|
