SN4 ""

No	Pattern	Freq
1	it be [adv] [verb] that [pers pn]	194
2	it be [adv] [vb pp] that [pers pn]	178
3	it is [adv] [verb] that [pers pn]	102
4	it was [adv] [verb] that [pers pn]	78
5	it be [adv] [verb] that it	64
6	it be [adv] [verb] that they	42
7	it be [adv] [verb] that he	38
8	it be also [verb] that [pers pn]	22
9	it be [adv] know that [pers pn]	17
10	it be [adv] known that [pers pn]	17
11	it be now [verb] that [pers pn]	17
12	it be [adv] [verb] that we	16
13	it be generally [verb] that [pers pn]	15
14	it be [adv] [verb] that you	15
15	it be [adv] assumed that [pers pn]	14
16	it be often [verb] that [pers pn]	14
17	it be [adv] assume that [pers pn]	14
18	it be [adv] say that [pers pn]	14
19	it 's [adv] [verb] that [pers pn]	13
20	it be widely [verb] that [pers pn]	13
21	it be well [verb] that [pers pn]	12
22	it be [adv] said that [pers pn]	11
23	it be [adv] suggested that [pers pn]	10
24	it be [adv] [verb] that she	10
25	it be [adv] thought that [pers pn]	10
26	it be [adv] suggest that [pers pn]	10
27	it be [adv] think that [pers pn]	10
28	it be [adv] agree that [pers pn]	9
29	it be [adv] [verb] that i	9
30	it be [adv] accepted that [pers pn]	8