| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [noun] over a [adj] period | 21 |
|
| 2 | [art] [noun sg] over a [adj] period | 18 |
|
| 3 | [art] [noun pl] over a [adj] period | 8 |
|
| 4 | [art] [noun] over a long period | 8 |
|
| 5 | a [noun] over a [adj] period | 5 |
|
