No | Pattern | Freq | Relations |
---|---|---|---|
1 | [pers pn] [is] difficult for us [verb] | 15 | |
2 | [pron] [is] difficult for us [verb] | 15 | |
3 | [pron] [is] difficult for us [to-vb] | 15 | |
4 | it [is] difficult for us [verb] | 15 | |
5 | it [is] difficult for us [verb] | 15 | |
6 | [pron] is difficult for us [verb] | 12 |