| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [verb] [prep] a [adj] period | 27 |
|
| 2 | [adv] [vb pp] [prep] a [adj] period | 18 |
|
| 3 | [adv] [verb] for a [adj] period | 12 |
|
| 4 | [adv] [verb] [prep] a short period | 7 |
|
| 5 | [adv] [verb] [prep] a long period | 7 |
|
| 6 | [adv] [verb] [prep] a long period | 6 |
|
| 7 | [adv] [vb infin] [prep] a [adj] period | 6 |
|
| 8 | [adv] [verb] [prep] a short period | 6 |
|
| 9 | only [verb] [prep] a [adj] period | 5 |
|
