| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at such a [noun] | 189 |
|
| 2 | at such a [noun sg] | 189 |
|
| 3 | [prep] such a time | 58 |
|
| 4 | at [adj] a time | 47 |
|
| 5 | at [det] a time | 46 |
|
| 6 | at such a time | 44 |
|
| 7 | at such [art] time | 44 |
|
| 8 | at such a time | 44 |
|
