| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [verb] back to | 574 |
|
| 2 | i [vb past] back to | 378 |
|
| 3 | i think back to | 20 |
|
| 4 | [pron] thought back to | 20 |
|
| 5 | i thought back [prep] | 11 |
|
| 6 | i thought [adv] to | 11 |
|
| 7 | i thought back [prep] | 11 |
|
| 8 | i thought back to | 8 |
|
