| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] a [adj] | 3446 |
|
| 2 | [prep] a [adj] period | 2001 |
|
| 3 | [prep] [adj] [adj] period | 429 |
|
| 4 | [adj] a [adj] period | 36 |
|
| 5 | [prep] [adj] a period | 20 |
|
