SN4 ""

No	Pattern	Freq
1	it is [adj] that [noun] [prep]	153
2	it is [adj] that [noun] [prep]	152
3	it is [verb] that [noun] [prep]	76
4	it is [vb pp] that [noun] [prep]	75
5	it is clear that [noun] [prep]	30
6	it is clear that [noun] [prep]	30
7	it is true that [noun] [prep]	21
8	it is true that [noun] [prep]	21
9	it is possible that [noun] [prep]	14
10	it is likely that [noun] [prep]	14
11	it is possible that [noun] [prep]	14
12	it is likely that [noun] [prep]	14
13	it is hoped that [noun] [prep]	12
14	it is hope that [noun] [prep]	12
15	it is unlikely that [noun] [prep]	9
16	it is unlikely that [noun] [prep]	9
17	it is know that [noun] [prep]	8
18	it is known that [noun] [prep]	8
19	it is thought that [noun] [prep]	8
20	it is think that [noun] [prep]	8
21	it is [adv] that [noun] [prep]	7
22	it is important that [noun] [prep]	6
23	it is interesting that [noun] [prep]	6
24	it is essential that [noun] [prep]	6
25	it is suggest that [noun] [prep]	6
26	it is important that [noun] [prep]	6
27	it is essential that [noun] [prep]	6
28	it is probable that [noun] [prep]	6
29	it is probable that [noun] [prep]	6
30	it is suggested that [noun] [prep]	6