| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] back to | 102 |
|
| 2 | it [vb mod] [be] to | 91 |
|
| 3 | [vb mod] [be] back to | 58 |
|
| 4 | it [vb mod] [be] back | 23 |
|
