| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] a | 4308 |
|
| 2 | could [vb infin] a | 4306 |
|
| 3 | [modal v] go a | 125 |
|
| 4 | could go [art] | 15 |
|
| 5 | could go [art] | 15 |
|
| 6 | could go a | 8 |
|
| 7 | could go a | 8 |
|
