| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adj] [unc] | 437 |
|
| 2 | [noun] [prep] a [num] [unc] | 220 |
|
| 3 | [noun] [prep] [art] 15 [unc] | 18 |
|
| 4 | [noun] [prep] a 15 [unc] | 13 |
|
