| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] to | 355 |
|
| 2 | [adj] could [adv] [vb infin] | 225 |
|
| 3 | [adj] could [vb infin] to | 117 |
|
| 4 | [adj] [adv] [vb infin] to | 8 |
|
