| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [adj] [noun] | 14264 |
|
| 2 | [modal v] [vb infin] back [noun] | 52 |
|
| 3 | [modal v] [vb infin] back [adj] | 18 |
|
| 4 | [vb infin] back [adj] [noun] | 14 |
|
