| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] [prep] [art] time | 249 |
|
| 2 | [prep] [det] at [art] [noun] | 230 |
|
| 3 | [prep] [adj] at [art] time | 83 |
|
| 4 | [prep] [det] at [art] time | 37 |
|
