| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] [num] [adj] year period | 5 |
|
| 2 | over [art] [num] [adj] year period | 5 |
|
| 3 | over [art] [num] [adj] year [noun sg] | 5 |
|
| 4 | over [art] [num] [adj] year [noun] | 5 |
|
