| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back to [noun] | 5396 |
|
| 2 | back to [noun prp] | 3306 |
|
| 3 | [adv] to london | 544 |
|
| 4 | back [prep] london | 370 |
|
| 5 | back to london | 257 |
|
