SN4 ""

No	Pattern	Freq
31	it [adv] hard	118
32	it very hard	55
33	it very hard	55
34	it [verb] hard	38
35	it [vb -s] hard	25
36	it [art] hard	23
37	it [art] hard	23
38	it so hard	20
39	it so hard	20
40	it the hard	16
41	it the hard	16
42	it [vb past] hard	13
43	it seem hard	11
44	it seems hard	8
45	it a hard	7
46	it a hard	7
47	it become hard	7
48	it becomes hard	6
49	it quite hard	6
50	it quite hard	6
51	it extremely hard	5
52	it extremely hard	5
53	it hard [verb]	532
54	it hard [to-vb]	521
55	it hard believe	80
56	it hard to believe	80
57	it hard to understand	23
58	it hard understand	23
59	it hard get	22
60	it hard [prep]	21