| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [conj] [vb past] | 24 |
|
| 2 | back [prep] [conj] [vb past] | 24 |
|
| 3 | back on [conj] [verb] | 17 |
|
| 4 | [adv] on [conj] [vb past] | 11 |
|
| 5 | [adv prt] on [conj] [vb past] | 10 |
|
| 6 | back on [conj] [vb past] | 9 |
|
| 7 | back on [conj] [vb past] | 9 |
|
