| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back [prep] the [num ord] century | 112 |
|
| 2 | [verb] back to the [num ord] century | 105 |
|
| 3 | [verb] back to the [num ord] century | 105 |
|
| 4 | date back [prep] the [num ord] century | 65 |
|
| 5 | [v-ing] back [prep] the [num ord] century | 41 |
|
| 6 | [vb -s] back [prep] the [num ord] century | 39 |
|
| 7 | dating back [prep] the [num ord] century | 29 |
|
| 8 | dates back [prep] the [num ord] century | 27 |
|
| 9 | go back [prep] the [num ord] century | 27 |
|
| 10 | [vb base] back [prep] the [num ord] century | 12 |
|
| 11 | goes back [prep] the [num ord] century | 12 |
|
| 12 | [vb pp] back [prep] the [num ord] century | 11 |
|
| 13 | [verb] back [prep] the sixteenth century | 8 |
|
| 14 | [verb] back [prep] the nineteenth century | 7 |
|
| 15 | [verb] back [prep] the thirteenth century | 7 |
|
| 16 | [verb] back [prep] the 13th century | 7 |
|
| 17 | traced back [prep] the [num ord] century | 7 |
|
| 18 | trace back [prep] the [num ord] century | 7 |
|
| 19 | [verb] back [prep] the eighteenth century | 6 |
|
| 20 | go back [prep] the [num ord] century | 6 |
|
| 21 | going back [prep] the [num ord] century | 6 |
|
| 22 | [verb] back [prep] the twelfth century | 6 |
|
| 23 | [verb] back [prep] the 14th century | 6 |
|
| 24 | date back [prep] the [num ord] century | 6 |
|
| 25 | [vb past] back [prep] the [num ord] century | 6 |
|
| 26 | [verb] back [prep] the seventeenth century | 5 |
|
| 27 | [verb] back [prep] the 19th century | 5 |
|
| 28 | [verb] back [prep] the last century | 5 |
|
| 29 | [verb] back [prep] the 12th century | 5 |
|
