| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [vb pp] at a [noun] | 44 |
|
| 2 | [coord] [vb pp] at a [noun sg] | 41 |
|
| 3 | [coord] [vb pp] at [art] time | 11 |
|
| 4 | [coord] [vb pp] at [art] time | 11 |
|
| 5 | [coord] [vb pp] [prep] a time | 8 |
|
| 6 | [coord] [vb pp] [prep] a time | 8 |
|
| 7 | [coord] [verb] at a time | 7 |
|
| 8 | [coord] [vb pp] at a time | 5 |
|
| 9 | [conj] [vb pp] at a time | 5 |
|
| 10 | [coord] [vb pp] at a time | 5 |
|
| 11 | [coord] [vb pp] at a time | 5 |
|
