| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [verb] a | 5127 |
|
| 2 | could [vb infin] [verb] [art] | 1240 |
|
| 3 | could [vb infin] [verb] [art] | 1240 |
|
| 4 | could [vb infin] [verb] a | 457 |
|
| 5 | could [verb] [verb] a | 397 |
|
