| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] a [noun] | 24454 |
|
| 2 | at a [noun] | 15341 |
|
| 3 | [subord] at [noun] | 1487 |
|
| 4 | [subord] at a | 167 |
|
