| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] about the [num ord] century | 5 |
|
| 2 | [adv] about the [num ord] century | 5 |
|
| 3 | [verb] about the [num ord] century | 5 |
|
| 4 | [prep] about the [num ord] century | 5 |
|
| 5 | about the [num ord] century [adv] | 5 |
|
| 6 | about the [num ord] century [adv] | 5 |
|
