| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] been make | 38 |
|
| 2 | could have been make | 38 |
|
| 3 | could [vb infin] been make | 38 |
|
| 4 | could [verb] been made | 37 |
|
| 5 | could have been make | 37 |
|
