| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun sg] at [det] [noun] | 617 |
|
| 2 | [prep] [noun] at [det] time | 455 |
|
| 3 | [prep] [noun sg] [prep] [det] time | 352 |
|
| 4 | [prep] [noun sg] [prep] [det] time | 352 |
|
| 5 | [prep] [noun sg] at [adj] time | 283 |
|
| 6 | [prep] [noun sg] at [det] time | 226 |
|
