| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] in the [num ord] [noun] | 17 |
|
| 2 | at [adv] in the [num ord] [noun sg] | 17 |
|
| 3 | at [adv] in the [num ord] century | 7 |
|
| 4 | at [adv] in the [num ord] century | 7 |
|
