SN4 ""

No	Pattern	Freq
1	it is [adv] [vb pp] that [pers pn]	98
2	it is [adv] [vb pp] that [pers pn]	98
3	it is [adv] [vb pp] that it	43
4	it is [adv] [vb pp] that they	23
5	it is now [vb pp] that [pers pn]	16
6	it is [adv] known that [pers pn]	13
7	it is often [vb pp] that [pers pn]	12
8	it is [adv] [vb pp] that you	11
9	it is [adv] [vb pp] that he	10
10	it is well [vb pp] that [pers pn]	10
11	it is [adv] thought that [pers pn]	10
12	it is generally [vb pp] that [pers pn]	9
13	it is [adv] assumed that [pers pn]	9
14	it is [adv] said that [pers pn]	8
15	it is [adv] argued that [pers pn]	7
16	it is [adv] recommended that [pers pn]	7
17	it is [adv] [vb pp] that we	7
18	it is strongly [vb pp] that [pers pn]	6
19	it is also [vb pp] that [pers pn]	6
20	it is [adv] suggested that [pers pn]	6
21	it is [adv] accepted that [pers pn]	6