No | Pattern | Freq | Relations |
---|---|---|---|
1 | [adv] difficult [to-vb] [coord] [verb] | 59 | |
2 | is [adv] difficult [to-vb] [coord] | 32 | |
3 | is [adv] [to-vb] [coord] [verb] | 23 | |
4 | is difficult [to-vb] [coord] [verb] | 16 | |
5 | is [adv] difficult [coord] [verb] | 5 | |
6 | is [adv] difficult [to-vb] [verb] | 5 |