| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [det] [noun pl] at a time | 42 |
|
| 2 | a [det] [noun pl] [prep] a time | 42 |
|
| 3 | [art] few [noun pl] [prep] a time | 41 |
|
| 4 | [art] [det] minutes [prep] a time | 7 |
|
| 5 | [art] [det] weeks [prep] a time | 6 |
|
