| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [adj] than half a century | 12 |
|
| 2 | for [adj] than half a century | 12 |
|
| 3 | for more than half a century | 12 |
|
| 4 | for more than half a century | 12 |
|
| 5 | for [det] than half a century | 12 |
|
| 6 | for [adj] than half a century | 12 |
|
