No | Pattern | Freq | Relations |
---|---|---|---|
1 | [adv] difficult [to-vb] [art] [adj] | 149 | |
2 | [adv] [to-vb] [conj] [art] [adj] | 91 | |
3 | [adv] difficult [to-vb] [conj] [art] | 66 | |
4 | difficult [to-vb] [conj] [art] [adj] | 49 | |
5 | [adv] difficult [to-vb] [conj] [adj] | 42 | |
6 | [adv] difficult [conj] [art] [adj] | 20 |