| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have been back to the | 5 |
|
| 2 | [pers pn] have been back to the | 5 |
|
| 3 | [pron] have been back to the | 5 |
|
| 4 | have been [verb] back to the | 30 |
|
| 5 | have been [vb pp] back to the | 28 |
|
| 6 | have been traced back to the | 5 |
|
| 7 | have been trace back to the | 5 |
|
| 8 | have been back to the [noun] | 10 |
|
| 9 | have been back to the [noun sg] | 8 |
|
