SN4 ""

No	Pattern	Freq
1	[verb] it [adv] for [art]	78
2	[vb past] it [adv] for [art]	21
3	[prep] it [adv] for [art]	17
4	[prep] it [adv] for [art]	17
5	[vb infin] it [adv] for [art]	16
6	[to-vb] it [adv] for [art]	14
7	[vb base] it [adv] for [art]	13
8	make it [adv] for [art]	9
9	[vb pp] it [adv] for [art]	7
10	leave it [adv] for [art]	6
11	put it [adv] for [art]	6
12	do it [adv] for [art]	5
13	in it [adv] for [art]	5
14	in it [adv] for [art]	5
15	it be [adv] for [art]	108
16	it [be] [adv] for [art]	108
17	it [is] [adv] for [art]	73
18	it 's [adv] for [art]	44
19	it was [adv] for [art]	34
20	it [was/were] [adv] for [art]	34
21	it [verb] [adv] for [art]	33
22	it is [adv] for [art]	29
23	it [vb past] [adv] for [art]	16
24	it [vb -s] [adv] for [art]	12
25	it [adv] [adv] for [art]	10
26	it [adv prt] [adv] for [art]	6
27	it [adv] [adj] for [art]	122
28	it [adv] [adj] for [art]	109
29	it [adv] [verb] for [art]	54
30	it [adv] difficult for [art]	38