| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be possible [to-vb] certain | 6 |
|
| 2 | [be] possible [to-vb] certain | 6 |
|
| 3 | possible [to-vb] certain [noun] | 8 |
|
| 4 | possible [to-vb] certain [noun pl] | 8 |
|
