| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back [prep] [art] [adv] [verb] | 15 |
|
| 2 | [verb] back [prep] [art] [adv] [verb] | 15 |
|
| 3 | [verb] back [prep] the [adv] [verb] | 11 |
|
| 4 | [verb] back [prep] [art] [adv] [vb pp] | 9 |
|
| 5 | [vb past] back [prep] [art] [adv] [verb] | 8 |
|
| 6 | look back [prep] [art] [adv] [verb] | 5 |
|
