| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in [num ord] [noun sg] | 1653 |
|
| 2 | back in [noun sg] | 912 |
|
| 3 | back [num ord] [noun sg] | 104 |
|
| 4 | back in [num ord] | 26 |
|
