| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] a [adj] period | 143 |
|
| 2 | be [vb pp] [prep] a [adj] period | 143 |
|
| 3 | be [vb pp] over a [adj] [noun] | 115 |
|
| 4 | be [vb pp] over a [adj] [noun sg] | 113 |
|
| 5 | be [vb pp] over a [adj] period | 52 |
|
| 6 | be [vb pp] over [art] [adj] period | 48 |
|
| 7 | be [vb pp] over [art] [adj] period | 48 |
|
| 8 | be [vb pp] over a [adj] period | 43 |
|
| 9 | [be] [vb pp] over a [adj] period | 42 |
|
| 10 | be [verb] over a [adj] period | 42 |
|
| 11 | be [vb pp] over a [adj] period | 42 |
|
| 12 | be [vb pp] over a [adj] period | 42 |
|
