No | Pattern | Freq | Relations |
---|---|---|---|
1 | [vb mod] not be [adv] difficult [to-vb] | 12 | |
2 | [modal v] not be [adv] difficult [to-vb] | 12 | |
3 | should not be [adv] difficult [to-vb] | 5 | |
4 | should not be [adv] difficult [to-vb] | 5 | |
5 | not be [adv] difficult [to-vb] [art] | 5 | |
6 | not be [adv] difficult [to-vb] [art] | 5 |