| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back to [art] time [adv] [noun] | 7 |
|
| 2 | back [prep] [art] time when [noun] | 7 |
|
| 3 | back [prep] [art] time [adv] [noun] | 7 |
|
| 4 | back to [art] time [adv] [noun] | 7 |
|
| 5 | back [prep] [art] time when [noun] | 7 |
|
| 6 | back [prep] [art] time [Wh adv] [noun] | 7 |
|
