| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] over a long period | 5 |
|
| 2 | been [verb] over a long [noun sg] | 5 |
|
| 3 | been [vb pp] over a long [noun] | 5 |
|
| 4 | been [verb] over a long [noun] | 5 |
|
| 5 | been [verb] over a long period | 5 |
|
| 6 | been [verb] over a long [noun] | 5 |
|
