| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [that] over a [noun sg] | 10 |
|
| 2 | that over a [noun] | 10 |
|
| 3 | [that] over a [noun] | 10 |
|
| 4 | [that] over a period | 6 |
|
| 5 | [that] over a period | 6 |
|
