| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [noun] at | 2804 |
|
| 2 | [prep] a [adj] [noun sg] at | 2697 |
|
| 3 | [prep] a [adj] time [prep] | 349 |
|
| 4 | [prep] [art] [adj] time at | 112 |
|
| 5 | [prep] a [adj] time at | 21 |
|
