| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] for a [noun] | 2350 |
|
| 2 | [adv] [prep] a period | 121 |
|
| 3 | [adv] for [art] period | 46 |
|
| 4 | [adv] for [art] period | 46 |
|
| 5 | [adv] for a period | 37 |
|
| 6 | [adv] for a period | 28 |
|
