| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [adj] period [prep] | 183 |
|
| 2 | over a [adj] period [prep] | 173 |
|
| 3 | [prep] a short period [prep] | 91 |
|
| 4 | [prep] a short period [prep] | 91 |
|
| 5 | over a short [noun sg] [prep] | 10 |
|
| 6 | over a short [noun] [prep] | 10 |
|
| 7 | over [art] short period [prep] | 9 |
|
| 8 | over a short period [prep] | 9 |
|
| 9 | over a short period [prep] | 8 |
|
| 10 | over a short period [prep] | 8 |
|
| 11 | over a short period [prep] | 8 |
|
