| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] back [prep] | 1446 |
|
| 2 | i [verb] back [prep] | 1007 |
|
| 3 | [modal v] i [verb] [prep] | 970 |
|
| 4 | [modal v] i [verb] back | 54 |
|
