| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | one at [art] time [prep] | 20 |
|
| 2 | one at a time [prep] | 20 |
|
| 3 | one at [art] time in | 5 |
|
| 4 | one at [art] time to | 5 |
|
