| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] | 32770 |
|
| 2 | [adv] [vb infin] to | 14312 |
|
| 3 | could [vb infin] to | 2045 |
|
| 4 | could [adv] to | 7 |
|
