| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] be achieved by | 26 |
|
| 2 | could [adv] be achieve by | 26 |
|
| 3 | could [adv] be achieve by | 21 |
|
| 4 | could only be achieve by | 9 |
|
| 5 | could only be achieve by | 9 |
|
| 6 | could best be achieve by | 5 |
|
| 7 | could not be achieve by | 5 |
|
| 8 | could best be achieve by | 5 |
|
| 9 | could [not/n't] be achieve by | 5 |
|
| 10 | could not be achieve by | 5 |
|
