| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] | 430257 |
|
| 2 | [prep] [num] [noun] | 150053 |
|
| 3 | a [num] [noun] | 13611 |
|
| 4 | [prep] a [num] | 8224 |
|
