| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a time [adv] [art] | 403 |
|
| 2 | [noun sg] [prep] a time [adv] | 299 |
|
| 3 | [noun sg] [prep] time [adv] [art] | 17 |
|
| 4 | [noun sg] [prep] a [adv] [art] | 9 |
|
