| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] [noun] and | 358 |
|
| 2 | at a [adj] [noun sg] and | 346 |
|
| 3 | [prep] a [adj] time and | 183 |
|
| 4 | [prep] a [adj] time and | 183 |
|
| 5 | at [art] [adj] time and | 158 |
|
| 6 | at a [adj] time [conj] | 52 |
|
| 7 | at a [adj] time [coord] | 43 |
|
| 8 | at a [adj] time and | 28 |
|
| 9 | at a [adj] time and | 28 |
|
| 10 | at a [adj] time and | 28 |
|
