| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a [noun] | 68100 |
|
| 2 | at a [noun] | 15341 |
|
| 3 | [adv] at [noun] | 11895 |
|
| 4 | [adv] at a | 1872 |
|
