| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [pron] [noun] | 3760 |
|
| 2 | [prep] [pron] first [noun] | 3362 |
|
| 3 | back [prep] [pron] first | 19 |
|
| 4 | back [prep] first [noun] | 19 |
|
