| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [det] than a [noun] | 382 |
|
| 2 | [prep] [det] than a century | 71 |
|
| 3 | for [det] [conj] a century | 49 |
|
| 4 | for [det] than [art] century | 49 |
|
| 5 | for [adj] than a century | 49 |
|
