| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] [art] [num ord] century | 900 |
|
| 2 | at [adv] [prep] [art] [num ord] | 83 |
|
| 3 | at [adv] [art] [num ord] century | 21 |
|
