| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [art] | 12287 |
|
| 2 | could [vb infin] [art] | 12287 |
|
| 3 | [modal v] [vb infin] an | 5845 |
|
| 4 | [vb mod] [vb infin] an | 5845 |
|
| 5 | could [vb infin] a | 4854 |
|
| 6 | could [verb] an | 550 |
|
| 7 | could [vb infin] an | 548 |
|
