SN4 ""

No	Pattern	Freq
1	it is [adj] that [prep]	339
2	it is [adj] that [prep]	338
3	it is [verb] that [prep]	174
4	it is [vb pp] that [prep]	169
5	it is clear that [prep]	79
6	it is clear that [prep]	79
7	it is true that [prep]	54
8	it is true that [prep]	54
9	it is possible that [prep]	36
10	it is possible that [prep]	36
11	it is likely that [prep]	30
12	it is likely that [prep]	30
13	it is estimated that [prep]	18
14	it is estimate that [prep]	18
15	it is significant that [prep]	17
16	it is significant that [prep]	17
17	it is hope that [prep]	14
18	it is hoped that [prep]	14
19	it is say that [prep]	13
20	it is said that [prep]	13
21	it is notable that [prep]	12
22	it is notable that [prep]	12
23	it is interesting that [prep]	10
24	it is interesting that [prep]	10
25	it is probable that [prep]	9
26	it is [adv] that [prep]	9
27	it is probable that [prep]	9
28	it is assume that [prep]	9
29	it is assumed that [prep]	9
30	it is reported that [prep]	7