| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a three-year period | 9 |
|
| 2 | [verb] over a three-year period | 5 |
|
| 3 | [vb pp] over a three-year period | 5 |
|
| 4 | [noun sg] over a three-year period | 5 |
|
