| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [pron] could have | 64 |
|
| 2 | [verb] [adv] they could [verb] | 57 |
|
| 3 | [verb] [adv] [pers pn] could have | 56 |
|
| 4 | [verb] [adv] they could [vb infin] | 56 |
|
| 5 | [verb] [adv] they [modal v] have | 48 |
|
| 6 | [verb] [adv] they [vb mod] have | 48 |
|
| 7 | [verb] [adv] they could have | 9 |
|
| 8 | [verb] [adv] they could have | 9 |
|
| 9 | [verb] [adv] they could have | 9 |
|
