| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after a [adj] period | 116 |
|
| 2 | after a long period | 22 |
|
| 3 | after a short period | 20 |
|
| 4 | after a certain period | 11 |
|
| 5 | after a brief period | 9 |
|
| 6 | after an [adj] period | 8 |
|
| 7 | after a reasonable period | 8 |
|
