No | Pattern | Freq | Relations |
---|---|---|---|
1 | be difficult to establish | 38 | |
2 | [be] difficult to establish | 38 | |
3 | [adv] difficult to establish | 37 | |
4 | [adv] difficult to establish | 36 | |
5 | is difficult to establish | 22 | |
6 | [is] difficult to establish | 22 | |
7 | more difficult to establish | 14 | |
8 | more difficult to establish | 14 | |
9 | be difficult to establish | 10 | |
10 | [be] difficult to establish | 10 | |
11 | it difficult to establish | 8 | |
12 | it difficult to establish | 8 | |
13 | [pron] difficult to establish | 8 | |
14 | [pers pn] difficult to establish | 8 | |
15 | very difficult to establish | 6 | |
16 | very difficult to establish | 6 | |
17 | difficult to establish [art] | 23 | |
18 | difficult to establish [art] | 23 | |
19 | difficult to establish [conj] | 17 | |
20 | difficult to establish the | 12 | |
21 | difficult to establish the | 12 | |
22 | difficult to establish a | 11 | |
23 | difficult to establish [subord] | 10 | |
24 | difficult to establish [pron] | 10 | |
25 | difficult to establish [adj] | 9 | |
26 | difficult to establish a | 8 | |
27 | difficult to establish [noun] | 7 | |
28 | difficult to establish [noun sg] | 6 | |
29 | difficult to establish [coord] | 6 | |
30 | difficult to establish [Wh det] | 6 |