| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back to an | 42 |
|
| 2 | [v-ing] back to an | 16 |
|
| 3 | go back to an | 15 |
|
| 4 | going back to an | 8 |
|
| 5 | [pron] back to an | 7 |
|
| 6 | [vb pp] back to an | 7 |
|
| 7 | [pers pn] back to an | 6 |
|
| 8 | come back to an | 6 |
|
| 9 | [noun] back to an | 5 |
|
| 10 | [vb -s] back to an | 5 |
|
| 11 | back [adv] to an | 9 |
|
| 12 | back on to an | 5 |
|
| 13 | back on to an | 5 |
|
| 14 | back [adv prt] to an | 5 |
|
| 15 | back to an [adj] | 40 |
|
| 16 | back to an [adj] | 24 |
|
| 17 | back to an [noun] | 15 |
|
| 18 | back to an [adj -er] | 15 |
|
| 19 | back to an [noun sg] | 13 |
|
| 20 | back to an earlier | 13 |
|
| 21 | back to an early | 13 |
|
| 22 | back to an old | 5 |
|
