| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been possible for | 43 |
|
| 2 | [verb] been possible for | 43 |
|
| 3 | [vb infin] been possible for | 26 |
|
| 4 | have been possible for | 26 |
|
| 5 | [vb -s] been possible for | 12 |
|
| 6 | has been possible for | 12 |
|
| 7 | [vb past] been possible for | 5 |
|
| 8 | had been possible for | 5 |
|
