| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [noun sg] [prep] a time | 15 |
|
| 2 | [coord] [noun sg] at a time | 11 |
|
| 3 | [coord] [noun sg] at a time | 11 |
|
| 4 | and [noun sg] [prep] a time | 9 |
|
| 5 | or [noun sg] [prep] a time | 5 |
|
