| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [noun] [conj] | 141 |
|
| 2 | [prep] a century [conj] | 72 |
|
| 3 | over [art] century [conj] | 23 |
|
| 4 | over [art] century [conj] | 23 |
|
| 5 | over a century [conj] | 13 |
|
