| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] over a [adj] period | 87 |
|
| 2 | [noun pl] for a [adj] period | 40 |
|
| 3 | [noun pl] [prep] a long period | 29 |
|
| 4 | [noun pl] within a [adj] period | 15 |
|
| 5 | [noun pl] [prep] a given period | 11 |
|
| 6 | [noun pl] of a [adj] period | 9 |
|
| 7 | [noun pl] [prep] a short period | 9 |
|
| 8 | [noun pl] [prep] a five-year period | 8 |
|
| 9 | [noun pl] in a [adj] period | 8 |
|
| 10 | [noun pl] during a [adj] period | 7 |
|
| 11 | [noun pl] [prep] a specified period | 7 |
|
| 12 | [noun pl] after a [adj] period | 7 |
|
| 13 | [noun pl] [prep] a limited period | 7 |
|
| 14 | [noun pl] [prep] a reasonable period | 7 |
|
| 15 | [noun pl] [prep] a prolonged period | 6 |
|
