| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be back to [noun sg] | 17 |
|
| 2 | it was back to [noun sg] | 9 |
|
| 3 | it [was/were] back to [noun sg] | 9 |
|
| 4 | it [is] back to [noun sg] | 8 |
|
| 5 | it 's back to [noun sg] | 7 |
|
