| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] over a period | 29 |
|
| 2 | [that] [prep] a period | 20 |
|
| 3 | [that] [prep] a period | 20 |
|
| 4 | [that] over [art] period | 12 |
|
| 5 | [that] over [art] period | 12 |
|
| 6 | [that] over a [noun] | 10 |
|
| 7 | [that] over a period | 6 |
|
| 8 | [that] over a period | 6 |
|
