| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] over a long [noun sg] | 49 |
|
| 2 | [vb pp] over a long [noun] | 47 |
|
| 3 | [verb] over a long period | 46 |
|
| 4 | [verb] over a long period | 46 |
|
| 5 | [verb] over a long [noun] | 37 |
|
| 6 | [verb] over a longer [noun] | 12 |
|
