SN4 ""

No	Pattern	Freq
1	it be important [to-vb] [prep]	200
2	it [be] important [to-vb] [prep]	200
3	it [be] important [to-vb] [prep]	200
4	it [is] important [to-vb] [prep]	187
5	it is important [to-vb] [prep]	165
6	it [be] important [to-vb] in	51
7	it [be] important [to-vb] at	37
8	it [be] important to bear [prep]	34
9	it [be] important [to-vb] between	34
10	it [be] important to distinguish [prep]	27
11	it [be] important to look [prep]	26
12	it [be] important [to-vb] to	23
13	it 's important [to-vb] [prep]	22
14	it [was/were] important [to-vb] [prep]	13
15	it was important [to-vb] [prep]	13
16	it [be] important [to-vb] on	9
17	it [be] important [to-vb] with	8
18	it [be] important [to-vb] for	7
19	it [be] important to differentiate [prep]	6
20	it [be] important to keep [prep]	6
21	it [be] important [to-vb] against	5
22	it [be] important [to-vb] about	5
23	it [be] important to work [prep]	5
24	it [be] important to guard [prep]	5
25	it [be] important to think [prep]	5