| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a time | 345 |
|
| 2 | [noun prp] [verb] at a | 198 |
|
| 3 | [noun prp] at a time | 55 |
|
| 4 | [noun prp] [verb] a time | 8 |
|
