SN4 ""

No	Pattern	Freq
1	it is [adv] [verb] that [pron]	156
2	it is [adv] [verb] that [pron]	156
3	it is [adv] [vb pp] that [pron]	149
4	it is [adv] [verb] that [pers pn]	102
5	it is [adv] [verb] that it	43
6	it is [adv] [verb] that it	43
7	it is [adv] [verb] that there	32
8	it is [adv] [verb] that [ex0]	32
9	it is [adv] [verb] that there	32
10	it is [adv] [verb] that they	25
11	it is [adv] [verb] that they	25
12	it is often [verb] that [pron]	22
13	it is well [verb] that [pron]	20
14	it is [adv] known that [pron]	19
15	it is [adv] know that [pron]	19
16	it is now [verb] that [pron]	17
17	it is [adv] said that [pron]	12
18	it is [adv] assume that [pron]	12
19	it is generally [verb] that [pron]	12
20	it is [adv] say that [pron]	12
21	it is [adv] assumed that [pron]	12
22	it is [adv] [verb] that he	11
23	it is [adv] [verb] that you	11
24	it is [adv] [verb] that you	11
25	it is [adv] [verb] that he	11
26	it is also [verb] that [pron]	11
27	it is [adv] accept that [pron]	10
28	it is [adv] [verb] that [pos pn]	10
29	it is [adv] accepted that [pron]	10
30	it is [adv] think that [pron]	10