| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] for [art] [num ord] [noun] | 850 |
|
| 2 | back [prep] [art] [num ord] [noun] | 305 |
|
| 3 | back [prep] [art] [num ord] [noun] | 305 |
|
| 4 | back for [art] [adj] [noun] | 75 |
|
| 5 | back for [art] [num ord] [noun] | 25 |
|
