| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have a | 7207 |
|
| 2 | could [verb] a | 4308 |
|
| 3 | could [vb infin] a | 4306 |
|
| 4 | could have [art] | 762 |
|
| 5 | could have [art] | 762 |
|
| 6 | could have a | 614 |
|
| 7 | could have a | 557 |
|
