SN4 ""

No	Pattern	Freq
1	[subord] it is [adv] [verb] that	85
2	[subord] it is [adv] [vb pp] that	81
3	[subord] it is [adv] [verb] that	73
4	although it is [adv] [verb] that	21
5	[subord] it is generally [verb] that	13
6	[subord] it is [adv] know that	13
7	[subord] it is well [verb] that	13
8	[subord] it is well [verb] that	13
9	[subord] it is [adv] known that	13
10	[subord] it is generally [verb] that	13
11	[subord] it is not [verb] that	12
12	[subord] it is [not/n't] [verb] that	12
13	[subord] it is not [verb] that	12
14	though it is [adv] [verb] that	11
15	as it is [adv] [verb] that	11
16	[subord] it is now [verb] that	10
17	[subord] it is now [verb] that	10
18	[subord] it is [adv] accepted that	8
19	[subord] it is [adv] accept that	8
20	if it is [adv] [verb] that	7
21	[subord] it is [adv] recognise that	7
22	[subord] it is [adv] recognised that	7
23	[subord] it is often [verb] that	6
24	[subord] it is often [verb] that	6
25	[subord] it is widely [verb] that	6
26	[subord] it is widely [verb] that	6
27	while it is [adv] [verb] that	6
28	since it is [adv] [verb] that	6
29	because it is [adv] [verb] that	6
30	[subord] it is [adv] suggested that	5