| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [modal v] [vb infin] [prep] [noun] | 1134 |
|
| 2 | [modal v] [vb infin] back [prep] [noun] | 329 |
|
| 3 | i [modal v] [vb infin] back [prep] | 306 |
|
| 4 | i [vb infin] back [prep] [noun] | 9 |
|
