No | Pattern | Freq | Relations |
---|---|---|---|
1 | [conj] it [is] often difficult [verb] | 23 | |
2 | [conj] it [is] often difficult [to-vb] | 23 | |
3 | [conj] it is often difficult [verb] | 22 | |
4 | [coord] it [is] often difficult [verb] | 10 | |
5 | that it [is] often difficult [verb] | 9 | |
6 | that it [is] often difficult [verb] | 9 | |
7 | [that] it [is] often difficult [verb] | 9 | |
8 | and it [is] often difficult [verb] | 5 | |
9 | and it [is] often difficult [verb] | 5 | |
10 | but it [is] often difficult [verb] | 5 | |
11 | but it [is] often difficult [verb] | 5 |