| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adv] long period | 19 |
|
| 2 | [noun] [prep] a [adv] long period | 19 |
|
| 3 | [noun] over a [adv] [adj] period | 14 |
|
| 4 | [noun] over a [adv] long [noun sg] | 10 |
|
| 5 | [noun] over a [adv] long [noun] | 10 |
|
| 6 | [noun] over [art] [adv] long period | 9 |
|
| 7 | [noun] over a [adv] long period | 9 |
|
| 8 | [noun] over [art] [adv] long period | 9 |
|
| 9 | [noun] over a [adv] long period | 8 |
|
| 10 | [noun] over a [adv] long period | 8 |
|
| 11 | [noun] over a [adv] long period | 8 |
|
