| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] [noun] or [prep] | 31 |
|
| 2 | at [noun] [noun sg] or [prep] | 19 |
|
| 3 | at [noun] time [conj] [prep] | 9 |
|
| 4 | at [noun] time or [prep] | 6 |
|
| 5 | [prep] [noun] time or [prep] | 5 |
|
