| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back to the [adj] [noun] | 1001 |
|
| 2 | dates back to the [adj] | 49 |
|
| 3 | dates back to the [noun] | 13 |
|
| 4 | dates to the [adj] [noun] | 6 |
|
