| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] a [adj] period | 70 |
|
| 2 | be [vb pp] [prep] a [adj] period | 70 |
|
| 3 | [be] [vb pp] over a [adj] period | 52 |
|
| 4 | be [vb pp] over a [adj] period | 52 |
|
| 5 | be [vb pp] over a [adj] [noun] | 49 |
|
| 6 | be [vb pp] over a [adj] [noun sg] | 48 |
|
| 7 | be [vb pp] over [art] [adj] period | 24 |
|
| 8 | be [vb pp] over [art] [adj] period | 24 |
|
| 9 | be [vb pp] over a [adj] period | 21 |
|
| 10 | be [vb pp] over a [adj] period | 21 |
|
| 11 | be [verb] over a [adj] period | 21 |
|
| 12 | [be] [vb pp] over a [adj] period | 21 |
|
| 13 | be [vb pp] over a [adj] period | 21 |
|
