| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] [art] [adj] | 243 |
|
| 2 | [modal v] have [verb] [art] same | 118 |
|
| 3 | could have [verb] [art] [det] | 21 |
|
| 4 | could [verb] [verb] [art] same | 12 |
|
| 5 | could have [verb] [art] same | 11 |
|
