SN4 ""

No	Pattern	Freq
1	make it more difficult for	69
2	[verb] it more difficult for	69
3	making it more difficult for	19
4	[v-ing] it more difficult for	19
5	make it more difficult for	14
6	[vb infin] it more difficult for	14
7	makes it more difficult for	12
8	[vb -s] it more difficult for	12
9	make it more difficult for	7
10	[vb base] it more difficult for	7
11	[to-vb] it more difficult for	6
12	to make it more difficult for	6
13	made it more difficult for	6
14	[vb past] it more difficult for	6
15	made it more difficult for	5
16	[vb pp] it more difficult for	5
17	it [adv] more difficult for	13
18	it [be] more difficult for	13
19	it be more difficult for	13
20	it [adv] more difficult for	13
21	it [is] more difficult for	10
22	it is more difficult for	10
23	it even more difficult for	5
24	it even more difficult for	5
25	it more difficult for [noun]	23
26	it more difficult for the	17
27	it more difficult for [art]	17
28	it more difficult for the	17
29	it more difficult for [art]	17
30	it more difficult for [pron]	16