| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] | 430262 |
|
| 2 | [prep] [noun] [be] | 82476 |
|
| 3 | a [noun] [be] | 21287 |
|
| 4 | [prep] a [be] | 34 |
|
