| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] over a [adj] [noun] | 262 |
|
| 2 | over a [adj] [noun] period | 142 |
|
| 3 | [vb pp] over a [adj] period | 83 |
|
| 4 | [vb pp] a [adj] [noun] period | 9 |
|
