| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [prep] the back | 130 |
|
| 2 | it on the back | 30 |
|
| 3 | it in the back | 29 |
|
| 4 | it at the back | 20 |
|
| 5 | it to the back | 13 |
|
| 6 | it into the back | 9 |
|
| 7 | it over the back | 9 |
|
| 8 | it round the back | 5 |
|
