| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [coord] [vb infin] back [prep] | 7 |
|
| 2 | [adv] and [vb infin] back [prep] | 6 |
|
| 3 | [adv] and [vb infin] back [prep] | 6 |
|
| 4 | [adv] [conj] [vb infin] back to | 5 |
|
