| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] at a time | 912 |
|
| 2 | [prep] [noun sg] at a | 634 |
|
| 3 | [prep] [noun sg] at time | 46 |
|
| 4 | [prep] [noun sg] a time | 5 |
|
