| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | than a century [prep] | 18 |
|
| 2 | than a century [prep] | 18 |
|
| 3 | than a century [prep] | 18 |
|
| 4 | than a century of | 6 |
|
| 5 | than a century after | 6 |
|
| 6 | than a century of | 6 |
|
| 7 | than a century after | 6 |
|
