| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] back [prep] a | 12 |
|
| 2 | have been [vb pp] back into a | 5 |
|
| 3 | has been [vb pp] back [prep] a | 5 |
|
| 4 | have been [vb pp] back into a | 5 |
|
