| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at the [adj] century | 6 |
|
| 2 | at [adv] the [adj] century | 21 |
|
| 3 | at least the [adj] century | 21 |
|
| 4 | at [adv] the [adj] century | 21 |
|
| 5 | at least the [adj] century | 21 |
|
| 6 | at the [adj] century [noun] | 5 |
|
