| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a time [prep] | 808 |
|
| 2 | [adv] [prep] a time | 382 |
|
| 3 | [adv] [prep] time [prep] | 201 |
|
| 4 | [adv] a time [prep] | 37 |
|
| 5 | [adv] [prep] a [prep] | 37 |
|
