| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this could [verb] [art] [noun] | 81 |
|
| 2 | this could [vb infin] [art] [noun] | 81 |
|
| 3 | this [modal v] have [art] [noun] | 58 |
|
| 4 | [adj] could have [art] [noun] | 10 |
|
| 5 | this could have [art] [noun] | 5 |
|
