| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period | 1796 |
|
| 2 | a [adj] period from | 18 |
|
| 3 | [prep] a [adj] from | 18 |
|
| 4 | [prep] a period from | 9 |
|
| 5 | [prep] [adj] period from | 8 |
|
