| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of a [noun sg] at [art] time | 16 |
|
| 2 | of a [noun] at [art] time | 16 |
|
| 3 | of a [noun] at [art] time | 16 |
|
| 4 | of a [noun] at [art] time | 13 |
|
| 5 | of a [noun] at a time | 8 |
|
| 6 | of a [noun] at the time | 8 |
|
