| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] for a [adj] | 2338 |
|
| 2 | for a [adj] period | 653 |
|
| 3 | [adv] a [adj] period | 138 |
|
| 4 | [adv] for a period | 37 |
|
| 5 | [adv] for [adj] period | 7 |
|
