SN4 ""

No	Pattern	Freq
1	be difficult for we	37
2	[be] difficult for we	37
3	[adv] difficult for we	33
4	[adv] difficult for we	32
5	[is] difficult for we	24
6	very difficult for we	22
7	very difficult for we	22
8	is difficult for we	19
9	[be] difficult for we	11
10	be difficult for we	11
11	more difficult for we	8
12	more difficult for we	8
13	's difficult for we	5
14	difficult [noun] for we	9
15	difficult [noun sg] for we	8
16	difficult for we [to-vb]	45
17	difficult for we [verb]	45
18	difficult for we [prep]	9
19	difficult for we [prep]	9
20	difficult for we to	6
21	difficult for we to	6
22	difficult for we [conj]	5