SN4 ""

No	Pattern	Freq
1	it is [adv] [vb pp] that	1240
2	it is [adv] [vb pp] that	1169
3	it is generally [vb pp] that	162
4	it is generally [vb pp] that	162
5	it is well [vb pp] that	160
6	it is well [vb pp] that	160
7	it is often [vb pp] that	150
8	it is often [vb pp] that	150
9	it is [adv] known that	149
10	it is [adv] assumed that	111
11	it is also [vb pp] that	108
12	it is also [vb pp] that	108
13	it is now [vb pp] that	102
14	it is now [vb pp] that	102
15	it is [adv] said that	99
16	it is sometimes [vb pp] that	95
17	it is sometimes [vb pp] that	95
18	it is widely [vb pp] that	88
19	it is [adv] accepted that	88
20	it is widely [vb pp] that	88
21	it is [adv] argued that	75
22	it is [not/n't] [vb pp] that	71
23	it is not [vb pp] that	71
24	it is not [vb pp] that	70
25	it is [adv] suggested that	69
26	it is [adv] believed that	56
27	it is [adv] recognised that	49
28	it is [adv] thought that	41
29	it is [adv] agreed that	41
30	it is [adv] established that	36