| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun prp] since the [adj] century | 16 |
|
| 2 | [prep] [noun prp] since the [adj] century | 16 |
|
| 3 | in [noun prp] since the [adj] century | 9 |
|
| 4 | in [noun prp] since the [adj] century | 9 |
|
