| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [adj] period and | 17 |
|
| 2 | for a short period and | 6 |
|
| 3 | for a short period and | 6 |
|
| 4 | for a limited period and | 5 |
|
| 5 | for a limited period and | 5 |
|
