| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] [prep] a | 3612 |
|
| 2 | [adj] [prep] a period | 97 |
|
| 3 | [prep] [adj] a period | 20 |
|
| 4 | [prep] [prep] a period | 6 |
|
