| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [adv] at a [adj] [noun] | 73 |
|
| 2 | [vb pp] [adv] at a [adj] [noun sg] | 71 |
|
| 3 | [vb pp] [adv] at [art] [adj] time | 40 |
|
| 4 | [vb pp] [adv] at [art] [adj] time | 40 |
|
| 5 | [vb pp] [adv] [prep] a [adj] time | 37 |
|
| 6 | [verb] [adv] at a [adj] time | 16 |
|
| 7 | [vb pp] [adv] at a [adj] time | 6 |
|
| 8 | [vb pp] [adv] at a [adj] time | 6 |
|
