| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] over [art] long period of | 7 |
|
| 2 | [noun pl] over a long period of | 7 |
|
| 3 | [noun pl] over a long period of | 7 |
|
| 4 | [noun pl] over [art] long period of | 7 |
|
| 5 | [noun pl] over long period of [noun] | 6 |
|
| 6 | [noun pl] over long period of time | 6 |
|
| 7 | [noun pl] over long period of time | 6 |
|
| 8 | [noun pl] over long period of [noun sg] | 6 |
|
