| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period | 1646 |
|
| 2 | for a [adj] period | 653 |
|
| 3 | over a [adj] period | 519 |
|
| 4 | [prep] a long period | 391 |
|
| 5 | [prep] a long period | 305 |
|
| 6 | [prep] a short period | 202 |
|
| 7 | [prep] a short period | 178 |
|
| 8 | [prep] a [adj -er] period | 146 |
|
| 9 | after a [adj] period | 121 |
|
| 10 | in a [adj] period | 98 |
|
| 11 | within a [adj] period | 94 |
|
| 12 | [prep] a longer period | 86 |
|
| 13 | [prep] a limited period | 66 |
|
| 14 | [prep] a limited period | 66 |
|
| 15 | of a [adj] period | 65 |
|
| 16 | during a [adj] period | 61 |
|
| 17 | [prep] a brief period | 60 |
|
| 18 | [prep] a brief period | 60 |
|
| 19 | [prep] a fixed period | 52 |
|
| 20 | [prep] a fixed period | 52 |
|
| 21 | [prep] a specified period | 48 |
|
| 22 | [prep] a specified period | 48 |
|
| 23 | [prep] a given period | 46 |
|
| 24 | [prep] a given period | 46 |
|
| 25 | [prep] a certain period | 42 |
|
| 26 | [prep] a prolonged period | 42 |
|
| 27 | [prep] a prolonged period | 42 |
|
| 28 | [prep] a certain period | 42 |
|
| 29 | [prep] a five-year period | 35 |
|
| 30 | [prep] a five-year period | 35 |
|
