| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [adv] [art] | 696 |
|
| 2 | could [vb infin] [adv] [art] | 689 |
|
| 3 | [modal v] go [adv] [art] | 100 |
|
| 4 | could go [adv] [art] | 11 |
|
