| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun sg] over a [adj] period | 46 |
|
| 2 | [adj] [noun pl] over a [adj] period | 30 |
|
| 3 | [adj] [noun] over a long period | 29 |
|
| 4 | [adj] [noun] over a prolonged period | 6 |
|
