| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb pp] to | 20138 |
|
| 2 | [verb] back to | 11786 |
|
| 3 | [vb pp] back to | 1459 |
|
| 4 | [verb] [vb pp] back | 1338 |
|
