| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adv] [adj] [noun] | 972 |
|
| 2 | at a [adv] [adj] [noun sg] | 955 |
|
| 3 | [prep] a [adv] [adj] time | 440 |
|
| 4 | [prep] a [adv] [adj] time | 440 |
|
| 5 | at [art] [adv] [adj] time | 66 |
|
| 6 | at a [adv] [adj] time | 43 |
|
| 7 | at a [adv] [adj] time | 43 |
|
