| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [vb pp] more [prep] | 8 |
|
| 2 | could [vb infin] do more [prep] | 5 |
|
| 3 | could have [verb] more [prep] | 5 |
|
| 4 | could [vb infin] done more [prep] | 5 |
|
