| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] back to | 1564 |
|
| 2 | [conj] [to-vb] to | 575 |
|
| 3 | [conj] back to | 197 |
|
| 4 | [conj] [to-vb] back | 97 |
|
