| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a [adj] period | 289 |
|
| 2 | [noun] [prep] a lengthy period | 12 |
|
| 3 | [noun] [prep] a lengthy period | 12 |
|
| 4 | [noun] over a lengthy [noun] | 6 |
|
| 5 | [noun] over a lengthy period | 6 |
|
| 6 | [noun] over a lengthy period | 6 |
|
| 7 | [noun] over a lengthy period | 6 |
|
| 8 | [noun] over [art] lengthy period | 6 |
|
| 9 | [noun] over a lengthy [noun sg] | 6 |
|
| 10 | [noun] over [art] lengthy period | 6 |
|
