SN4 ""

No	Pattern	Freq
1	it is [adv] [vb pp] that	1169
2	it is generally [verb] that	162
3	it is well [verb] that	160
4	it is often [verb] that	150
5	it is [adv] know that	147
6	it is [adv] known that	147
7	it is also [verb] that	110
8	it is [adv] assumed that	109
9	it is [adv] assume that	109
10	it is now [verb] that	102
11	it is [adv] say that	99
12	it is [adv] said that	98
13	it is sometimes [verb] that	95
14	it is [adv] accept that	88
15	it is [adv] accepted that	88
16	it is widely [verb] that	88
17	it is [adv] argue that	73
18	it is [adv] argued that	73
19	it is [adv] believe that	56
20	it is [adv] believed that	56
21	it is [adv] suggested that	53
22	it is [adv] suggest that	53
23	it is [adv] recognise that	50
24	it is [adv] recognised that	49
25	it is [adv] agree that	42
26	it is [adv] agreed that	41
27	it is [adv] thought that	36
28	it is [adv] think that	36
29	it is [adv] established that	36
30	it is [adv] establish that	36