| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] the [adj] [noun] | 2111 |
|
| 2 | back [prep] the [adj] [noun sg] | 1710 |
|
| 3 | [adv] [prep] the [adj] century | 935 |
|
| 4 | back [prep] the [adj] century | 140 |
|
| 5 | back [prep] [art] [adj] century | 139 |
|
| 6 | back [prep] [art] [adj] century | 139 |
|
| 7 | back [prep] the [adj] century | 139 |
|
