| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] over a [adj] period | 156 |
|
| 2 | [noun] over a long period | 95 |
|
| 3 | [noun pl] over a [adj] period | 87 |
|
| 4 | [noun] over a five-year period | 13 |
|
| 5 | [noun] over a prolonged period | 12 |
|
| 6 | [n mass] over a [adj] period | 10 |
|
| 7 | [noun prp] over a [adj] period | 9 |
|
| 8 | [noun] over a three-year period | 9 |
|
| 9 | [noun] over a two-year period | 8 |
|
| 10 | [noun] over a four-year period | 7 |
|
| 11 | [noun] over a short period | 7 |
|
| 12 | [noun] over a given period | 7 |
|
| 13 | [noun] over a 24-hour period | 6 |
|
| 14 | [noun] over a lengthy period | 6 |
|
| 15 | [noun] over a sustained period | 5 |
|
| 16 | [noun] over a 10-year period | 5 |
|
