SN4 ""

No	Pattern	Freq
1	[conj] it be difficult for [pron]	22
2	that it be difficult for [pron]	10
3	that it be difficult for [pron]	10
4	[that] it be difficult for [pron]	10
5	[subord] it be difficult for [pron]	7
6	[verb] it be difficult for [pron]	6
7	[coord] it be difficult for [pron]	5
8	[noun] it be difficult for [pron]	5
9	it [vb mod] be difficult for [pron]	32
10	it [modal v] be difficult for [pron]	32
11	it would be difficult for [pron]	14
12	it would be difficult for [pron]	14
13	it may be difficult for [pron]	8
14	it may be difficult for [pron]	8
15	it will be difficult for [pron]	6
16	it will be difficult for [pron]	6
17	it be [adv] difficult for [pron]	53
18	it be [adv] difficult for [pron]	50
19	it be very difficult for [pron]	27
20	it be very difficult for [pron]	27
21	it be difficult for [pron] [to-vb]	73
22	it be difficult for [pron] [verb]	73
23	it be difficult for [pron] [prep]	7
24	it be difficult for [pron] [prep]	7
25	it be difficult for [pron] [adv]	6
26	it be difficult for [pron] [adv]	6