| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] [adj] [noun] | 5225 |
|
| 2 | at [adj] [adj] [noun sg] | 3324 |
|
| 3 | [prep] [adj] [adj] period | 324 |
|
| 4 | at [adj] [adj] period | 22 |
|
