| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] to be possible | 19 |
|
| 2 | it [modal v] to be possible | 19 |
|
| 3 | it [modal v] to be possible | 19 |
|
| 4 | it [modal v] to be possible | 19 |
|
| 5 | it ought to be possible | 15 |
|
| 6 | it ought to be possible | 15 |
|
