| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [v-ing] back to the [adj] | 43 |
|
| 2 | [noun sg] [v-ing] back to the [adj] | 23 |
|
| 3 | [noun sg] dating back to the [adj] | 22 |
|
| 4 | [noun sg] [v-ing] back to the [num ord] | 13 |
|
| 5 | [noun sg] going back to the [adj] | 8 |
|
| 6 | [noun sg] [v-ing] back to the [num] | 7 |
|
| 7 | history [v-ing] back to the [adj] | 5 |
|
