| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [adv] [noun sg] | 71 |
|
| 2 | at [art] [adj] [adv] [noun sg] | 12 |
|
| 3 | at a [adj] [adv] [noun sg] | 9 |
|
| 4 | at a [adj] [adv] [noun] | 8 |
|
