SN4 ""

No	Pattern	Freq
1	it [is] [adv] [vb pp] that [det]	152
2	it is [adv] [vb pp] that [det]	149
3	it [is] [adv] [vb pp] that [det]	136
4	it [is] [adv] [vb pp] that this	41
5	it [is] generally [vb pp] that [det]	22
6	it [is] generally [vb pp] that [det]	22
7	it [is] [adv] assumed that [det]	18
8	it [is] [adv] [vb pp] that such	18
9	it [is] [adv] known that [det]	17
10	it [is] [adv] [vb pp] that these	17
11	it [is] not [vb pp] that [det]	16
12	it [is] not [vb pp] that [det]	16
13	it [is] [not/n't] [vb pp] that [det]	16
14	it [is] [adv] [vb pp] that all	15
15	it [is] often [vb pp] that [det]	14
16	it [is] often [vb pp] that [det]	14
17	it [is] well [vb pp] that [det]	14
18	it [is] well [vb pp] that [det]	14
19	it [is] [adv] accepted that [det]	14
20	it [is] [adv] [vb pp] that any	13
21	it [is] [adv] [vb pp] that some	12
22	it [is] also [vb pp] that [det]	11
23	it [is] now [vb pp] that [det]	11
24	it [is] [adv] [vb pp] that many	11
25	it [is] also [vb pp] that [det]	11
26	it [is] now [vb pp] that [det]	11
27	it [is] sometimes [vb pp] that [det]	10
28	it [is] [adv] said that [det]	10
29	it [is] sometimes [vb pp] that [det]	10
30	it [is] widely [vb pp] that [det]	8