| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] a | 1492 |
|
| 2 | [adv] [vb infin] for a | 451 |
|
| 3 | could [adv] [vb infin] for | 350 |
|
| 4 | could [vb infin] for a | 102 |
|
