| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of [noun] at a [noun] | 260 |
|
| 2 | of [noun] at a [noun sg] | 245 |
|
| 3 | of [noun] at [art] time | 215 |
|
| 4 | of [noun] at [art] time | 215 |
|
| 5 | [prep] [noun] at a time | 203 |
|
| 6 | of [noun] [prep] a time | 86 |
|
| 7 | of [noun] at a time | 74 |
|
| 8 | of [noun] at a time | 74 |
|
