| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [vb infin] back | 30 |
|
| 2 | [vb base] [vb infin] back | 30 |
|
| 3 | [vb base] go back | 12 |
|
| 4 | [vb base] come back | 9 |
|
