| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv prt] to a time when | 9 |
|
| 2 | back to a time when | 8 |
|
| 3 | back to a time when | 8 |
|
| 4 | [adv] to a time when | 6 |
|
| 5 | forward to a time when | 5 |
|
| 6 | forward to a time when | 5 |
|
