| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] at a time | 500 |
|
| 2 | weeks [prep] a time | 43 |
|
| 3 | hours [prep] a time | 40 |
|
| 4 | days [prep] a time | 37 |
|
| 5 | months [prep] a time | 36 |
|
| 6 | [noun pl] for a time | 28 |
|
| 7 | minutes [prep] a time | 24 |
|
| 8 | years [prep] a time | 17 |
|
| 9 | [noun pl] in a time | 15 |
|
| 10 | [noun pl] of a time | 9 |
|
| 11 | steps [prep] a time | 6 |
|
| 12 | areas [prep] a time | 5 |
|
