| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [verb] at [art] time | 15 |
|
| 2 | a [noun] [verb] at [art] time | 15 |
|
| 3 | a [noun sg] [verb] at [art] time | 15 |
|
| 4 | a [noun] [verb] at [art] time | 11 |
|
| 5 | a [noun] [verb] at the time | 11 |
|
| 6 | a [noun] [verb] at the time | 11 |
|
| 7 | a [noun] [vb pp] at [art] time | 8 |
|
