| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only for a [adj] [noun] | 103 |
|
| 2 | [adv] for a [adj] period | 72 |
|
| 3 | [adv] for a [adj] period | 54 |
|
| 4 | only [prep] a [adj] period | 28 |
|
| 5 | only [prep] a [adj] period | 28 |
|
| 6 | only for a [adj] period | 17 |
|
| 7 | only for a [adj] period | 17 |
|
| 8 | only for [art] [adj] period | 17 |
|
