SN4 ""

No	Pattern	Freq
1	it be [adv] [adj] that	3698
2	it [is] [adv] [adj] that	3048
3	it is [adv] [adj] that	2575
4	it [was/were] [adv] [adj] that	641
5	it was [adv] [adj] that	640
6	it 's [adv] [adj] that	473
7	it [be] also [adj] that	426
8	it [be] quite [adj] that	397
9	it [be] [adv] clear that	397
10	it [be] [adv] important that	363
11	it [be] [adv] likely that	327
12	it [be] very [adj] that	326
13	it [be] [adv] possible that	317
14	it [be] [adv] true that	301
15	it [be] [adv] surprising that	265
16	it [be] hardly [adj] that	227
17	it [be] [adv] unlikely that	177
18	it [be] so [adj] that	172
19	it [be] more [adj] that	129
20	it [be] therefore [adj] that	125
21	it [be] highly [adj] that	123
22	it [be] [adv] obvious that	120
23	it [be] certainly [adj] that	113
24	it [be] most [adj] that	97
25	it [be] [adv] certain that	94
26	it [be] now [adj] that	91
27	it [be] perhaps [adj] that	89
28	it [be] almost [adj] that	88
29	it [be] equally [adj] that	78
30	it [be] absolutely [adj] that	66