SN4 ""

No	Pattern	Freq
1	[conj] it is that [adv]	7
2	[adv] it is that [adv]	6
3	it is [adj] that [adv]	223
4	it is [adj] that [adv]	221
5	it is [verb] that [adv]	127
6	it is [vb pp] that [adv]	126
7	it is estimated that [adv]	40
8	it is estimate that [adv]	40
9	it is clear that [adv]	37
10	it is clear that [adv]	37
11	it is true that [adv]	22
12	it is true that [adv]	22
13	it is likely that [adv]	16
14	it is likely that [adv]	16
15	it is possible that [adv]	15
16	it is possible that [adv]	15
17	it is hoped that [adv]	14
18	it is hope that [adv]	14
19	it is unlikely that [adv]	11
20	it is unlikely that [adv]	11
21	it is significant that [adv]	11
22	it is significant that [adv]	11
23	it is evident that [adv]	9
24	it is evident that [adv]	9
25	it is obvious that [adv]	8
26	it is think that [adv]	8
27	it is interesting that [adv]	8
28	it is interesting that [adv]	8
29	it is obvious that [adv]	8
30	it is thought that [adv]	8