| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a [adj -er] time | 39 |
|
| 2 | [verb] [vb pp] at a [adj -er] | 37 |
|
| 3 | [vb pp] at a [adj -er] time | 35 |
|
| 4 | [verb] [vb pp] at a time | 20 |
|
| 5 | [verb] [vb pp] a [adj -er] time | 9 |
|
