SN4 ""

No	Pattern	Freq
1	it [be] [adj] that the [adj]	698
2	it be [adj] that the [adj]	698
3	it [is] [adj] that the [adj]	593
4	it [be] [adj] that the [adj]	579
5	it is [adj] that the [adj]	568
6	it [be] clear that the [adj]	130
7	it [was/were] [adj] that the [adj]	104
8	it was [adj] that the [adj]	103
9	it [be] possible that the [adj]	68
10	it [be] likely that the [adj]	64
11	it [be] true that the [adj]	56
12	it [be] [adj] that the [num]	37
13	it [be] important that the [adj]	35
14	it [be] evident that the [adj]	35
15	it [be] obvious that the [adj]	29
16	it [be] [adj] that the [det]	26
17	it 's [adj] that the [adj]	25
18	it [be] [adj] that the two	24
19	it [be] [adj] that the two	24
20	it [be] [adj] that the [adj -er]	23
21	it [be] essential that the [adj]	21
22	it [be] unlikely that the [adj]	21
23	it [be] probable that the [adj]	20
24	it [be] significant that the [adj]	19
25	it [be] [adj] that the [num ord]	19
26	it [be] [adj] that the new	15
27	it [be] [adj] that the new	15
28	it [be] [adj] that the [adj -est]	14
29	it [be] [adj] that the same	13
30	it [be] [adj] that the same	13