| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] they could [adv] [vb infin] | 100 |
|
| 2 | [vb past] they could [adv] [vb infin] | 99 |
|
| 3 | [vb past] they could [not/n't] [vb infin] | 78 |
|
| 4 | [vb past] they could not [vb infin] | 78 |
|
| 5 | [vb past] they could not [vb infin] | 39 |
|
| 6 | [vb past] they could n't [vb infin] | 39 |
|
| 7 | said they could [adv] [vb infin] | 35 |
|
| 8 | [vb past] they could [adv] [vb infin] | 22 |
|
| 9 | [vb past] they could [adv] afford | 12 |
|
| 10 | felt they could [adv] [vb infin] | 12 |
|
| 11 | thought they could [adv] [vb infin] | 8 |
|
| 12 | found they could [adv] [vb infin] | 6 |
|
| 13 | [vb past] they could [adv] get | 6 |
|
| 14 | knew they could [adv] [vb infin] | 6 |
|
| 15 | decided they could [adv] [vb infin] | 5 |
|
| 16 | [vb past] they could [adv] see | 5 |
|
| 17 | [vb past] they could only [vb infin] | 5 |
|
| 18 | [vb past] they could only [vb infin] | 5 |
|
