| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [noun] at [det] time | 37 |
|
| 2 | [vb past] a [noun] at [det] [noun] | 21 |
|
| 3 | [vb past] [art] [noun] at [det] time | 16 |
|
| 4 | [vb past] a [noun] [prep] [det] time | 7 |
|
| 5 | [vb past] a [noun] at [adj] time | 5 |
|
