No | Pattern | Freq | Relations |
---|---|---|---|
1 | it [be] difficult for them [verb] | 15 | |
2 | it be difficult [prep] them [verb] | 15 | |
3 | it [be] difficult [prep] them [to-vb] | 15 | |
4 | it [be] difficult [prep] them [verb] | 15 | |
5 | it is difficult [prep] them [verb] | 12 | |
6 | it [is] difficult [prep] them [verb] | 12 |