| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in a [noun sg] [prep] [det] time | 8 |
|
| 2 | in a [noun] [prep] [det] time | 8 |
|
| 3 | in a [noun] at [det] time | 7 |
|
| 4 | in a [noun] at [det] time | 7 |
|
