| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [adj -er] [adj] period | 15 |
|
| 2 | the [adj -er] [adj] period | 15 |
|
| 3 | the later [adj] period | 10 |
|
| 4 | the earlier [adj] period | 5 |
|
