| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they could have [vb pp] [art] | 46 |
|
| 2 | they could have [vb pp] the | 28 |
|
| 3 | they could have [vb pp] the | 28 |
|
| 4 | they could have [vb pp] a | 18 |
|
| 5 | they could have [vb pp] a | 12 |
|
| 6 | they could have had [art] | 6 |
|
| 7 | they could have [vb pp] an | 6 |
|
