| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] at [det] time | 455 |
|
| 2 | [prep] [noun pl] at [det] [noun] | 230 |
|
| 3 | [prep] [noun pl] [prep] [det] time | 77 |
|
| 4 | [prep] [noun pl] [prep] [det] time | 77 |
|
| 5 | [prep] [noun pl] at [adj] time | 75 |
|
| 6 | [prep] [noun pl] at [det] time | 52 |
|
