| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [pron] back | 1280 |
|
| 2 | [vb infin] [pers pn] back | 1229 |
|
| 3 | [vb infin] us [adv] | 830 |
|
| 4 | [verb] us back | 293 |
|
| 5 | [vb infin] we back | 38 |
|
