| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a time | 464 |
|
| 2 | [prep] a time [art] | 80 |
|
| 3 | [adv] [prep] a [art] | 66 |
|
| 4 | [adv] [prep] time [art] | 14 |
|
