| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] the | 496 |
|
| 2 | could have [vb pp] the | 492 |
|
| 3 | [modal v] have seen the | 156 |
|
| 4 | could have seen [art] | 9 |
|
| 5 | could have seen [art] | 9 |
|
| 6 | could have see the | 8 |
|
| 7 | could have seen the | 7 |
|
| 8 | could [verb] seen the | 7 |
|
