| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [be] [verb] [to-vb] back [art] | 5 |
|
| 2 | [noun sg] [be] [to-vb] back [prep] [art] | 9 |
|
| 3 | [noun sg] [be] [to-vb] back [prep] [art] | 9 |
|
| 4 | [noun sg] [be] [to-vb] back [art] [noun] | 5 |
|
