SN4 ""

No	Pattern	Freq
1	[conj] [pers pn] is difficult for	44
2	[that] [pers pn] is difficult for	16
3	that [pers pn] is difficult for	16
4	that [pers pn] is difficult for	16
5	[coord] [pers pn] is difficult for	15
6	[subord] [pers pn] is difficult for	13
7	and [pers pn] is difficult for	11
8	and [pers pn] is difficult for	11
9	[noun] [pers pn] is difficult for	8
10	[noun sg] [pers pn] is difficult for	7
11	[pers pn] is [adv] difficult for	78
12	[pers pn] is [adv] difficult for	75
13	[pers pn] is very difficult for	23
14	[pers pn] is very difficult for	23
15	[pers pn] is more difficult for	10
16	[pers pn] is more difficult for	10
17	[pers pn] is extremely difficult for	9
18	[pers pn] is extremely difficult for	9
19	[pers pn] is difficult [to-vb] for	13
20	[pers pn] is difficult [verb] for	13
21	[pers pn] is difficult account for	6
22	[pers pn] is difficult to account for	6
23	[pers pn] is difficult for [pron]	57
24	[pers pn] is difficult for [pers pn]	49
25	[pers pn] is difficult for [art]	31
26	[pers pn] is difficult for [art]	31
27	[pers pn] is difficult for [noun]	29
28	[pers pn] is difficult for [adj]	21
29	[pers pn] is difficult for [noun pl]	20
30	[pers pn] is difficult for the	19