SN4 ""

No	Pattern	Freq
1	[conj] it is [adv] [verb] that	190
2	[conj] it is [adv] [vb pp] that	184
3	[coord] it is [adv] [verb] that	108
4	[subord] it is [adv] [verb] that	73
5	and it is [adv] [verb] that	62
6	and it is [adv] [verb] that	62
7	but it is [adv] [verb] that	46
8	but it is [adv] [verb] that	46
9	[conj] it is generally [verb] that	37
10	[conj] it is now [verb] that	29
11	[conj] it is [adv] know that	27
12	[conj] it is [adv] known that	27
13	[conj] it is well [verb] that	22
14	[conj] it is [adv] accept that	18
15	although it is [adv] [verb] that	18
16	although it is [adv] [verb] that	18
17	[conj] it is [adv] accepted that	18
18	[conj] it is [adv] recognise that	16
19	[conj] it is [adv] recognised that	16
20	[conj] it is [adv] assume that	14
21	[conj] it is [adv] assumed that	14
22	[conj] it is often [verb] that	14
23	[conj] it is widely [verb] that	12
24	as it is [adv] [verb] that	10
25	as it is [adv] [verb] that	10
26	that it is [adv] [verb] that	9
27	[conj] it is [adv] believed that	9
28	[conj] it is [adv] agreed that	9
29	[conj] it is [adv] agree that	9
30	[conj] it is [adv] believe that	9