| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which [pers pn] could have | 28 |
|
| 2 | in [Wh det] [pers pn] could have | 15 |
|
| 3 | [prep] [Wh det] they could have | 12 |
|
| 4 | [prep] [Wh det] he could have | 10 |
|
| 5 | [prep] what [pers pn] could have | 8 |
|
| 6 | [prep] [Wh det] it could have | 5 |
|
