| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun] [noun] | 2612 |
|
| 2 | [adv prt] a [noun] [noun] | 1960 |
|
| 3 | [adv prt] at [noun] [noun] | 771 |
|
| 4 | [adv prt] at a [noun] | 359 |
|
