SN4 ""

No	Pattern	Freq
1	[subord] it is [verb] that	503
2	[subord] it is [verb] that	503
3	[subord] it is [vb pp] that	496
4	if it is [verb] that	164
5	when it is [verb] that	65
6	where it is [verb] that	51
7	although it is [verb] that	42
8	[subord] it is accept that	37
9	[subord] it is accepted that	37
10	[subord] it is know that	36
11	[subord] it is known that	36
12	[subord] it is assumed that	35
13	[subord] it is assume that	35
14	because it is [verb] that	30
15	once it is [verb] that	29
16	[subord] it is felt that	28
17	[subord] it is feel that	28
18	as it is [verb] that	27
19	[subord] it is think that	22
20	[subord] it is thought that	22
21	[subord] it is recognise that	19
22	[subord] it is considered that	19
23	[subord] it is said that	19
24	[subord] it is say that	19
25	[subord] it is consider that	19
26	[subord] it is recognised that	18
27	since it is [verb] that	18
28	while it is [verb] that	16
29	[subord] it is believe that	14
30	[subord] it is remember that	14