| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a time [prep] | 808 |
|
| 2 | [prep] a [adj -er] time | 132 |
|
| 3 | a [adj -er] time [prep] | 41 |
|
| 4 | [prep] a [adj -er] [prep] | 34 |
|
