| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [to-vb] [noun] | 148 |
|
| 2 | could [vb infin] [to-vb] [noun] | 147 |
|
| 3 | [modal v] do [to-vb] [noun] | 53 |
|
| 4 | could do [verb] [noun] | 19 |
|
| 5 | could do [to-vb] [noun] | 18 |
|
