SN4 ""

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