| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] back to [noun sg] | 177 |
|
| 2 | [v-ing] back to [noun sg] | 167 |
|
| 3 | [v-ing] [to-vb] to [noun sg] | 140 |
|
| 4 | [v-ing] [to-vb] back to | 79 |
|
| 5 | [v-ing] [to-vb] back [noun sg] | 6 |
|
