| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not yet been [verb] to | 13 |
|
| 2 | have not yet been [verb] to | 13 |
|
| 3 | has not yet been [verb] to | 6 |
|
| 4 | [vb -s] not yet been [verb] to | 6 |
|
| 5 | have not yet been [verb] to | 5 |
|
| 6 | [vb base] not yet been [verb] to | 5 |
|
