| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] [noun] [prep] | 1903 |
|
| 2 | at a [adj] [noun sg] [prep] | 1889 |
|
| 3 | [prep] a [adj] time [prep] | 284 |
|
| 4 | at [art] [adj] time [prep] | 151 |
|
| 5 | at [art] [adj] time [prep] | 151 |
|
| 6 | at a [adj] time [prep] | 73 |
|
| 7 | at a [adj] time [prep] | 71 |
|
| 8 | at a [adj] time [prep] | 62 |
|
| 9 | at a [adj] time [prep] | 62 |
|
