| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [verb] [art] | 1240 |
|
| 2 | [vb infin] [verb] [adv prt] [art] | 858 |
|
| 3 | could [verb] [adv prt] [art] | 450 |
|
| 4 | could [vb infin] [adv prt] [art] | 443 |
|
| 5 | could [vb infin] [verb] [adv prt] | 407 |
|
