| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] per cent | 500 |
|
| 2 | about [art] [adj] per cent | 15 |
|
| 3 | about [art] [adj] per cent | 15 |
|
| 4 | about a [adj] per cent | 9 |
|
| 5 | about a [adj] [unc] cent | 8 |
|
| 6 | about a [adj] per [unc] | 8 |
|
