| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] [num] year period | 94 |
|
| 2 | over a [num] year [noun sg] | 76 |
|
| 3 | over the [num] year [noun sg] | 27 |
|
| 4 | over [art] five year [noun sg] | 17 |
|
| 5 | over [art] three year [noun sg] | 14 |
|
| 6 | over [art] two year [noun sg] | 13 |
|
| 7 | over [art] ten year [noun sg] | 8 |
|
| 8 | over [art] 20 year [noun sg] | 7 |
|
