| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb pp] at a [noun] | 120 |
|
| 2 | [verb] [vb pp] at a [noun sg] | 115 |
|
| 3 | [verb] [vb pp] at [art] time | 67 |
|
| 4 | [verb] [vb pp] at [art] time | 67 |
|
| 5 | [verb] [vb pp] [prep] a time | 29 |
|
| 6 | [verb] [vb pp] [prep] a time | 29 |
|
| 7 | [verb] [verb] at a time | 29 |
|
| 8 | [verb] [vb pp] at a time | 20 |
|
| 9 | [verb] [vb pp] at a time | 20 |
|
| 10 | [verb] [vb pp] at a time | 20 |
|
