| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be achieve [be] | 5 |
|
| 2 | could [be] achieve be | 5 |
|
| 3 | could [be] achieved [be] | 5 |
|
| 4 | could [be] achieve [was/were] | 5 |
|
