| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] | 430262 |
|
| 2 | [prep] [det] [noun] | 353842 |
|
| 3 | a [det] [noun] | 23908 |
|
| 4 | [prep] a [det] | 8648 |
|
