SN4 ""

No	Pattern	Freq
1	[verb] it difficult	1488
2	[verb] it difficult	1488
3	find it difficult	952
4	make it difficult	533
5	[vb past] it difficult	376
6	[vb base] it difficult	318
7	[vb infin] it difficult	296
8	found it difficult	267
9	find it difficult	254
10	find it difficult	225
11	[vb -s] it difficult	203
12	[v-ing] it difficult	164
13	makes it difficult	148
14	made it difficult	109
15	[vb pp] it difficult	92
16	making it difficult	91
17	finding it difficult	73
18	make it difficult	71
19	found it difficult	66
20	make it difficult	64
21	finds it difficult	53
22	[to-vb] it difficult	39
23	made it difficult	25
24	to make it difficult	25
25	to find it difficult	14