| Similarity | Rank | |
|---|---|---|
| date_back_to | 0.734 | 19696 |
| from_the_[number]_century | 0.660 | 32292 |
| date_back_to_[number] | 0.627 | 25557 |
| early_[number]_century | 0.600 | 23404 |
| period_from | 0.588 | 19188 |
| late_[number]_century | 0.588 | 81307 |
| the_late_[number]_century | 0.579 | 59566 |
| c_._[number] | 0.572 | 13653 |
| undated | 0.570 | 73142 |
| the_earliest | 0.565 | 64650 |
| predate | 0.559 | 39484 |
| the_[number]_century_ad | 0.557 | 97270 |
| the_[number]_th_century | 0.552 | 32296 |
| [number]_century | 0.551 | 4260 |
| the_beginning_of_the_[number]_century | 0.546 | 98367 |
| as_far_back_as | 0.543 | 81634 |
| the_early_[number]_century | 0.541 | 13259 |
| circa_[number] | 0.536 | 17042 |
| the_Bronze_Age | 0.533 | 84065 |
| early_period | 0.532 | 97586 |
| [number]_th_century | 0.531 | 34991 |
| (_c_._[number]_) | 0.530 | 55014 |
| extant | 0.523 | 32326 |
| the_present_day | 0.522 | 11647 |
| (_c_._[number] | 0.522 | 92594 |