| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and [prep] a [adj] period | 23 |
|
| 2 | and [prep] a [adj] period | 22 |
|
| 3 | and for a [adj] period | 10 |
|
| 4 | and for a [adj] period | 10 |
|
| 5 | and after a [adj] period | 6 |
|
| 6 | and [prep] a long period | 6 |
|
| 7 | and after a [adj] period | 6 |
|
| 8 | and [prep] a long period | 5 |
|
