No | Pattern | Freq | Relations |
---|---|---|---|
1 | it be impossible to be [adj] | 30 | |
2 | it [be] impossible to be [adj] | 30 | |
3 | it [is] impossible to be [adj] | 23 | |
4 | it is impossible to be [adj] | 19 | |
5 | it [be] impossible to be sure | 9 | |
6 | it [be] impossible to be certain | 7 | |
7 | it was impossible to be [adj] | 7 | |
8 | it [was/were] impossible to be [adj] | 7 |