| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] [prep] | 168934 |
|
| 2 | [adv] a [noun] [prep] | 30275 |
|
| 3 | [prep] [adv] a [noun] | 3372 |
|
| 4 | [prep] [adv] [noun] [prep] | 1994 |
|
