| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [unc] | 1205 |
|
| 2 | [prep] a [num] [unc] | 598 |
|
| 3 | [prep] [art] 50 [unc] | 50 |
|
| 4 | [prep] a 50 [unc] | 29 |
|
