SN4 ""

No	Pattern	Freq
1	it [vb mod] be [adj] that [pron]	55
2	it [modal v] be [adj] that [pers pn]	40
3	it will be [adj] that [pron]	14
4	it will be [adj] that [pron]	14
5	it may be [adj] that [pron]	12
6	it may be [adj] that [pron]	12
7	it would be [adj] that [pron]	11
8	it would be [adj] that [pron]	11
9	it [modal v] be [adj] that we	10
10	it [modal v] be [adj] that we	10
11	it [modal v] be [adj] that it	10
12	it [modal v] be [adj] that it	10
13	it [modal v] be obvious that [pron]	9
14	it should be [adj] that [pron]	9
15	it should be [adj] that [pron]	9
16	it [modal v] be clear that [pron]	8
17	it [modal v] be [adj] that he	8
18	it [modal v] be [adj] that he	8
19	it [modal v] be [adj] that [ex0]	7
20	it [modal v] be [adj] that there	7
21	it [modal v] be [adj] that there	7
22	it must be [adj] that [pron]	6
23	it [modal v] be unlikely that [pron]	6
24	it must be [adj] that [pron]	6
25	it [modal v] be significant that [pron]	5
26	it [modal v] be [adj] that [pos pn]	5