SN4 ""

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