| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a time [prep] | 64 |
|
| 2 | [verb] at a [adj -er] time | 40 |
|
| 3 | [verb] a [adj -er] time [prep] | 18 |
|
| 4 | at a [adj -er] time [prep] | 9 |
|
