| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] over a [adj] period | 52 |
|
| 2 | be [vb pp] over a [adj] period | 52 |
|
| 3 | was [vb pp] [prep] a [adj] period | 20 |
|
| 4 | was [vb pp] over a [adj] [noun] | 20 |
|
| 5 | was [vb pp] [prep] a [adj] period | 20 |
|
| 6 | was [vb pp] over a [adj] [noun sg] | 18 |
|
| 7 | [was/were] [vb pp] over a [adj] period | 9 |
|
| 8 | was [vb pp] over [art] [adj] period | 6 |
|
| 9 | was [vb pp] over [art] [adj] period | 6 |
|
| 10 | was [vb pp] over a [adj] period | 6 |
|
| 11 | was [vb pp] over a [adj] period | 5 |
|
| 12 | was [vb pp] over a [adj] period | 5 |
|
| 13 | was [verb] over a [adj] period | 5 |
|
