| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] [num] per cent | 9 |
|
| 2 | at a [adj] [num] per cent | 9 |
|
| 3 | at a [adj] [num] per [no cls] | 9 |
|
| 4 | at a [adj] [num] per [unc] | 9 |
|
