| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] a | 273 |
|
| 2 | could have [vb pp] a | 273 |
|
| 3 | [modal v] have made a | 210 |
|
| 4 | [vb mod] have made a | 210 |
|
| 5 | could have made [art] | 50 |
|
| 6 | could have made [art] | 50 |
|
| 7 | could have made a | 35 |
|
| 8 | could [vb infin] made a | 33 |
|
| 9 | could [verb] made a | 33 |
|
| 10 | could have made a | 33 |
|
| 11 | could have make a | 32 |
|
| 12 | could have made a | 32 |
|
