| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] could [vb infin] | 9978 |
|
| 2 | could [vb infin] a | 4854 |
|
| 3 | [noun sg] [vb infin] a | 539 |
|
| 4 | [noun sg] could a | 20 |
|
