| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] and | 4725 |
|
| 2 | [prep] a [adj] period | 1796 |
|
| 3 | [prep] [adj] period and | 63 |
|
| 4 | a [adj] period and | 58 |
|
| 5 | [prep] a period and | 12 |
|
