| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] [det] [noun] | 474 |
|
| 2 | at [noun] [det] [noun sg] | 388 |
|
| 3 | [prep] [noun] [det] time | 194 |
|
| 4 | at [noun] [adj] time | 44 |
|
| 5 | at [noun] [det] time | 17 |
|
