| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they could have been [verb] | 16 |
|
| 2 | [that] they could have been [verb] | 7 |
|
| 3 | that they could have been [verb] | 7 |
|
| 4 | that they could have been [verb] | 7 |
|
| 5 | [subord] they could have been [verb] | 5 |
|
| 6 | [adv] they could have been [verb] | 5 |
|
| 7 | they could [adv] have been [verb] | 7 |
|
| 8 | they could have been [verb] [prep] | 24 |
|
| 9 | they could have been [verb] [prep] | 24 |
|
| 10 | they could have been [verb] by | 6 |
|
| 11 | they could have been [verb] [adv] | 6 |
|
| 12 | they could have been [verb] by | 6 |
|
