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