| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] over a [adj] period | 156 |
|
| 2 | [noun sg] over a long period | 66 |
|
| 3 | [noun sg] over an [adj] period | 9 |
|
| 4 | [noun sg] over a extended period | 7 |
|
| 5 | [noun sg] over a four-year period | 7 |
|
| 6 | [noun sg] over a prolonged period | 6 |
|
| 7 | [noun sg] over a five-year period | 6 |
|
| 8 | [noun sg] over a three-year period | 5 |
|
| 9 | [noun sg] over a lengthy period | 5 |
|
| 10 | [noun sg] over a short period | 5 |
|
