SN4 ""

No	Pattern	Freq
1	[conj] it be difficult for	63
2	that it be difficult for	25
3	that it be difficult for	25
4	[that] it be difficult for	25
5	[coord] it be difficult for	20
6	[subord] it be difficult for	18
7	and it be difficult for	15
8	and it be difficult for	15
9	[verb] it be difficult for	10
10	[noun] it be difficult for	9
11	[noun sg] it be difficult for	8
12	[adv] it be difficult for	7
13	[adj] it be difficult for	5
14	[Wh det] it be difficult for	5
15	[pron] it be difficult for	5
16	[adj] it be difficult for	5
17	but it be difficult for	5
18	[adv] it be difficult for	5
19	but it be difficult for	5
20	it [vb mod] be difficult for	80
21	it [modal v] be difficult for	80
22	it would be difficult for	26
23	it would be difficult for	26
24	it will be difficult for	20
25	it will be difficult for	20
26	it may be difficult for	19
27	it may be difficult for	19
28	it must be difficult for	6
29	it must be difficult for	6
30	it be [adv] difficult for	166