| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the [num ord] century | 9700 |
|
| 2 | about the [num ord] [noun] | 236 |
|
| 3 | about the [num ord] [noun sg] | 229 |
|
| 4 | about the [adj] century | 20 |
|
| 5 | about the [num ord] century | 20 |
|
| 6 | about the [num ord] century | 20 |
|
| 7 | about [art] [num ord] century | 20 |
|
| 8 | about [art] [num ord] century | 20 |
|
