SN4 ""

No	Pattern	Freq
1	it be [adj] [to-vb] that [det]	258
2	it [is] [adj] [to-vb] that [det]	234
3	it is [adj] [to-vb] that [det]	217
4	it [be] [adj] [to-vb] that this	78
5	it [be] important [to-vb] that [det]	63
6	it [be] [adj] to note that [det]	38
7	it [be] [adj] [to-vb] that all	30
8	it [be] [adj] [to-vb] that these	29
9	it [be] [adj] [to-vb] that some	27
10	it [be] [adj] to say that [det]	26
11	it [be] [adj] to believe that [det]	23
12	it [be] [adj] to assume that [det]	22
13	it [be] interesting [to-vb] that [det]	22
14	it [was/were] [adj] [to-vb] that [det]	22
15	it was [adj] [to-vb] that [det]	22
16	it [be] [adj] [to-vb] that such	22
17	it [be] [adj] to remember that [det]	21
18	it [be] difficult [to-vb] that [det]	19
19	it 's [adj] [to-vb] that [det]	17
20	it [be] reasonable [to-vb] that [det]	17
21	it [be] [adj] [to-vb] that any	17
22	it [be] easy [to-vb] that [det]	16
23	it [be] [adj] [to-vb] that many	16
24	it [be] hard [to-vb] that [det]	16
25	it [be] fair [to-vb] that [det]	14
26	it [be] [adj] to ensure that [det]	10
27	it [be] [adj] [to-vb] that most	10
28	it [be] [adj] to think that [det]	9
29	it [be] [adj] to suppose that [det]	9
30	it [be] [adj] [to-vb] that that	8