| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] over a period of time | 16 |
|
| 2 | [verb] over a period of time | 16 |
|
| 3 | [verb] over a period of [noun sg] | 16 |
|
| 4 | [verb] over a period of [noun pl] | 9 |
|
| 5 | [vb past] over a period of [noun] | 9 |
|
