No | Pattern | Freq | Relations |
---|---|---|---|
1 | is [adv] difficult [verb] [adj] | 49 | |
2 | is [adv] difficult [verb] [adj] | 41 | |
3 | is often [adj] [verb] [adj] | 16 | |
4 | is often [adj] [verb] [adj] | 16 | |
5 | is often difficult [verb] [adj] | 10 | |
6 | be often difficult [verb] [adj] | 6 | |
7 | [be] often difficult [verb] [adj] | 6 | |
8 | is often difficult [verb] [adj] | 5 | |
9 | [is] often difficult [verb] [adj] | 5 | |
10 | is often difficult [verb] [adj] | 5 |