| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] over a [adj] period [prep] | 15 |
|
| 2 | over a [adj] [noun] period [prep] | 5 |
|
| 3 | over a [adj] [noun sg] period [prep] | 5 |
|
| 4 | over a [adj] period [prep] [noun] | 19 |
|
| 5 | over a [adj] period [prep] [noun sg] | 17 |
|
| 6 | over a [adj] period [prep] time | 16 |
|
| 7 | over a [adj] period [prep] time | 16 |
|
