| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] a [noun] | 12391 |
|
| 2 | [adj] [prep] [art] period | 157 |
|
| 3 | [adj] [prep] [art] period | 157 |
|
| 4 | [adj] [prep] a period | 97 |
|
| 5 | [adj] [prep] a period | 60 |
|
