| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] they could [adv] [vb infin] | 20 |
|
| 2 | they [vb past] they could [adv] [vb infin] | 20 |
|
| 3 | they [vb past] they could [not/n't] [vb infin] | 12 |
|
| 4 | they [vb past] they could not [vb infin] | 12 |
|
| 5 | they [vb past] they could n't [vb infin] | 8 |
|
| 6 | they [vb past] they could [adv] [vb infin] | 8 |
|
| 7 | they said they could [adv] [vb infin] | 5 |
|
| 8 | they knew they could [adv] [vb infin] | 5 |
|
