| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | she could [adv] have [vb pp] a | 8 |
|
| 2 | she could not have [vb pp] a | 7 |
|
| 3 | she could [not/n't] have [vb pp] a | 7 |
|
| 4 | she could have [vb pp] a [noun sg] | 8 |
|
| 5 | she could have [vb pp] a [noun] | 8 |
|
