| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back to the [num ord] [noun sg] | 146 |
|
| 2 | [verb] back to the [num ord] century | 106 |
|
| 3 | [verb] back to the [num ord] century | 105 |
|
| 4 | date back to the [num ord] [noun] | 69 |
|
| 5 | [v-ing] back to the [num ord] [noun] | 50 |
|
| 6 | [vb -s] back to the [num ord] [noun] | 47 |
|
| 7 | go back to the [num ord] [noun] | 42 |
|
| 8 | dating back to the [num ord] [noun] | 32 |
|
| 9 | dates back to the [num ord] [noun] | 27 |
|
| 10 | [verb] back to the first [noun] | 25 |
|
| 11 | [vb base] back to the [num ord] [noun] | 16 |
|
| 12 | [vb pp] back to the [num ord] [noun] | 15 |
|
| 13 | goes back to the [num ord] [noun] | 15 |
|
| 14 | [verb] back to the last [noun] | 10 |
|
| 15 | [to-vb] back to the [num ord] [noun] | 10 |
|
| 16 | going back to the [num ord] [noun] | 10 |
|
| 17 | [verb] back to the second [noun] | 9 |
|
| 18 | [vb past] back to the [num ord] [noun] | 8 |
|
| 19 | trace back to the [num ord] [noun] | 7 |
|
| 20 | [verb] back to the sixteenth [noun] | 7 |
|
| 21 | date back to the [num ord] [noun] | 7 |
|
| 22 | [verb] back to the 13th [noun] | 7 |
|
| 23 | [verb] back to the thirteenth [noun] | 7 |
|
| 24 | traced back to the [num ord] [noun] | 7 |
|
| 25 | [verb] back to the 14th [noun] | 6 |
|
| 26 | go back to the [num ord] [noun] | 6 |
|
| 27 | [verb] back to the [num ord] world | 5 |
|
| 28 | [verb] back to the [num ord] world | 5 |
|
| 29 | [verb] back to the 12th [noun] | 5 |
|
| 30 | [verb] back to the nineteenth [noun] | 5 |
|
