| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back to the [adj] century | 107 |
|
| 2 | [verb] back to the [num ord] century | 106 |
|
| 3 | [verb] back to the last [noun] | 10 |
|
| 4 | [verb] back [prep] the last century | 5 |
|
| 5 | [verb] back [prep] the last century | 5 |
|
| 6 | [verb] back to the last century | 5 |
|
| 7 | [verb] back to [art] last century | 5 |
|
| 8 | [verb] back to the last century | 5 |
|
| 9 | [verb] [adv prt] to the last century | 5 |
|
| 10 | [verb] back to the last century | 5 |
|
| 11 | [verb] back to the last century | 5 |
|
| 12 | [verb] [adv] to the last century | 5 |
|
| 13 | [verb] back to [art] last century | 5 |
|
