| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [noun prp] [verb] back [art] | 15 |
|
| 2 | [noun prp] [noun] [verb] back the | 11 |
|
| 3 | [noun prp] [noun] [vb past] back [art] | 10 |
|
| 4 | [noun prp] [noun] [verb] back a | 6 |
|
