| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back [prep] the time when | 18 |
|
| 2 | [verb] back [prep] the time [Wh adv] | 18 |
|
| 3 | [verb] back to the time [adv] | 18 |
|
| 4 | [verb] back [prep] the time when | 18 |
|
| 5 | go back [prep] the time [adv] | 6 |
|
