SN4 ""

No	Pattern	Freq
1	it be [adj] that [noun] [vb base]	117
2	it is [adj] that [noun] [vb base]	97
3	it be [adj] that [noun pl] [vb base]	91
4	it be important that [noun] [vb base]	33
5	it be important that [noun] [vb base]	33
6	it be [adj] that [noun] have	27
7	it be [adj] that people [vb base]	21
8	it be [adj] that people [vb base]	21
9	it be [adj] that [n mass] [vb base]	21
10	it 's [adj] that [noun] [vb base]	19
11	it be essential that [noun] [vb base]	17
12	it be essential that [noun] [vb base]	17
13	it be vital that [noun] [vb base]	13
14	it be vital that [noun] [vb base]	13
15	it be clear that [noun] [vb base]	10
16	it be [adj] that [noun] do	10
17	it be clear that [noun] [vb base]	10
18	it be [adj] that children [vb base]	8
19	it be [adj] that child [vb base]	8
20	it be likely that [noun] [vb base]	6
21	it be true that [noun] [vb base]	6
22	it be likely that [noun] [vb base]	6
23	it be true that [noun] [vb base]	6
24	it be [adj] that [noun] know	5
25	it be [adj] that [noun] understand	5