| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun sg] over a [adj] period | 58 |
|
| 2 | [adj] [noun sg] over a [adj] period | 46 |
|
| 3 | [adj] [noun sg] over a long period | 24 |
|
| 4 | [det] [noun sg] over a [adj] period | 8 |
|
| 5 | [adj] [noun sg] over a prolonged period | 5 |
|
