| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] | 490653 |
|
| 2 | [prep] a [adj] | 341441 |
|
| 3 | [prep] [noun] [adj] | 167804 |
|
| 4 | a [noun] [adj] | 29245 |
|
