| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could have [vb pp] a | 150 |
|
| 2 | [pers pn] could have had a | 38 |
|
| 3 | i could have [vb pp] a | 32 |
|
| 4 | he could have [vb pp] a | 28 |
|
| 5 | you could have [vb pp] a | 26 |
|
| 6 | we could have [vb pp] a | 24 |
|
| 7 | [pers pn] could have made a | 19 |
|
| 8 | she could have [vb pp] a | 15 |
|
| 9 | they could have [vb pp] a | 12 |
|
| 10 | it could have [vb pp] a | 10 |
|
| 11 | [pers pn] could have heard a | 8 |
|
| 12 | [pers pn] could have got a | 7 |
|
| 13 | [pers pn] could have done a | 7 |
|
