| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] [prep] a | 1674 |
|
| 2 | [num] [prep] a time | 160 |
|
| 3 | [prep] [prep] a time | 9 |
|
| 4 | [prep] [num] [prep] time | 6 |
|
