| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] not [adv] been achieved | 7 |
|
| 2 | [verb] not [adv] been achieved | 7 |
|
| 3 | have not [adv] been achieved | 7 |
|
| 4 | has not [adv] been achieved | 7 |
|
