SN4 ""

No	Pattern	Freq
1	it [be] difficult [verb] that	132
2	it [be] difficult [verb] that	132
3	[pers pn] [be] difficult [verb] that	132
4	[pron] [be] difficult [verb] that	132
5	[modal v] [be] difficult [verb] that	21
6	[vb mod] [be] difficult [verb] that	21
7	would [be] difficult [verb] that	18
8	would [be] difficult [verb] that	18
9	[adv] [be] difficult [verb] that	6
10	[be] [adv] difficult [verb] that	49
11	[be] [adv] difficult [verb] that	27
12	[be] not difficult [verb] that	22
13	[be] [not/n't] difficult [verb] that	22
14	[be] not difficult [verb] that	20
15	[be] very difficult [verb] that	9
16	[be] very difficult [verb] that	9
17	[be] difficult [adv] [verb] that	8
18	[be] difficult [not/n't] [verb] that	7
19	[be] difficult not [verb] that	7
20	[be] difficult not [verb] that	7
21	[be] difficult [verb] [noun] that	11
22	[be] difficult [verb] [noun pl] that	5
23	[be] difficult [verb] that [art]	56
24	[be] difficult [verb] that [art]	56
25	[be] difficult [verb] that [pron]	42
26	[be] difficult [verb] that the	39
27	[be] difficult [verb] that the	39
28	[be] difficult [verb] that [adj]	32
29	[be] difficult [verb] that [pers pn]	28
30	[be] difficult [verb] that [det]	26