| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | than a [noun] | 6448 |
|
| 2 | [conj] a century | 145 |
|
| 3 | [subord] a century | 128 |
|
| 4 | than [art] century | 127 |
|
| 5 | than a century | 123 |
|
