| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could [adv] have [vb pp] a | 69 |
|
| 2 | [pers pn] [modal v] not have [vb pp] a | 54 |
|
| 3 | [pers pn] could [not/n't] have [vb pp] a | 48 |
|
| 4 | [pers pn] could not have [vb pp] a | 48 |
|
| 5 | [pers pn] could not have [vb pp] [art] | 45 |
|
| 6 | [pers pn] could not have [vb pp] [art] | 45 |
|
| 7 | [pers pn] could not have [vb pp] a | 23 |
|
| 8 | [pers pn] could not have [vb pp] a | 20 |
|
| 9 | [pers pn] could not [verb] [vb pp] a | 20 |
|
| 10 | [pers pn] could not [vb infin] [vb pp] a | 20 |
|
| 11 | [pron] could not have [vb pp] a | 20 |
|
| 12 | [pers pn] could not have [verb] a | 20 |
|
