SN4 ""

No	Pattern	Freq
1	[subord] it is [adv] [verb] that	73
2	[subord] it is [adv] [verb] that	73
3	[subord] it is [adv] [vb pp] that	72
4	although it is [adv] [verb] that	18
5	[subord] it is well [verb] that	13
6	[subord] it is generally [verb] that	13
7	[subord] it is [adv] know that	11
8	[subord] it is [adv] known that	11
9	as it is [adv] [verb] that	10
10	[subord] it is now [verb] that	10
11	though it is [adv] [verb] that	8
12	[subord] it is [adv] accepted that	8
13	[subord] it is [adv] accept that	8
14	[subord] it is [adv] recognised that	7
15	[subord] it is [adv] recognise that	7
16	[subord] it is widely [verb] that	6
17	since it is [adv] [verb] that	6
18	if it is [adv] [verb] that	6
19	because it is [adv] [verb] that	6
20	[subord] it is often [verb] that	6
21	[subord] it is [adv] assume that	5
22	[subord] it is [adv] assumed that	5