| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could help [vb infin] | 98 |
|
| 2 | could make [vb infin] | 9 |
|
| 3 | could [vb infin] do | 8 |
|
| 4 | could [vb infin] prevent | 5 |
|
