| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [num] [adv] [to-vb] | 12 |
|
| 2 | back [prep] [adj] [adv prt] [to-vb] | 12 |
|
| 3 | back [prep] [adj] down [to-vb] | 12 |
|
| 4 | back [prep] [adj] down [to-vb] | 12 |
|
| 5 | back from [adj] [adv] [to-vb] | 12 |
|
