| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb pp] over a [adj] period | 14 |
|
| 2 | have [vb pp] over a [adj] period | 14 |
|
| 3 | has [vb pp] over a [adj] [noun] | 13 |
|
| 4 | has [vb pp] over a [adj] [noun sg] | 12 |
|
| 5 | has [vb pp] [prep] a [adj] period | 7 |
|
| 6 | has [vb pp] over [art] [adj] period | 7 |
|
| 7 | has [vb pp] over a [adj] period | 5 |
|
| 8 | [vb -s] [vb pp] over a [adj] period | 5 |
|
| 9 | has [verb] over a [adj] period | 5 |
|
