| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [vb base] [pron] could have | 137 |
|
| 2 | [pers pn] [vb base] [pers pn] could have | 131 |
|
| 3 | [pers pn] [vb base] they [modal v] have | 120 |
|
| 4 | [pers pn] [vb base] they could [verb] | 39 |
|
| 5 | [pers pn] [vb base] they could [vb infin] | 39 |
|
| 6 | [pers pn] [verb] they could have | 18 |
|
| 7 | [pers pn] [vb base] they could have | 14 |
|
| 8 | [pers pn] [vb base] they could have | 11 |
|
| 9 | [pron] [vb base] they could have | 11 |
|
