| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] such a period | 18 |
|
| 2 | [prep] such a period | 18 |
|
| 3 | over such a [noun] | 15 |
|
| 4 | over such a [noun sg] | 14 |
|
| 5 | over such a period | 5 |
|
| 6 | over such [art] period | 5 |
|
| 7 | over such a period | 5 |
|
| 8 | over such a period | 5 |
|
| 9 | over [adj] a period | 5 |
|
| 10 | over such [art] period | 5 |
|
