| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back [prep] the nineteenth | 8 |
|
| 2 | back [prep] the [adj] nineteenth | 6 |
|
| 3 | back [prep] the [adj] nineteenth | 6 |
|
| 4 | back [prep] the nineteenth century | 9 |
|
| 5 | back [prep] the nineteenth [noun sg] | 9 |
|
| 6 | back [prep] the nineteenth century | 9 |
|
| 7 | back [prep] the nineteenth [noun] | 9 |
|
