SN4 ""

No	Pattern	Freq
1	it be [adj] [to-vb] that [noun]	351
2	it be [adj] [verb] that [noun]	349
3	it is [adj] [verb] that [noun]	279
4	it be [adj] [verb] that [noun prp]	117
5	it be [adj] [verb] that [noun sg]	111
6	it be [adj] [verb] that [noun pl]	103
7	it be important [verb] that [noun]	77
8	it be important [verb] that [noun]	77
9	it be [adj] note that [noun]	48
10	it be [adj] to note that [noun]	47
11	it be [adj] say that [noun]	40
12	it be [adj] to say that [noun]	40
13	it 's [adj] [verb] that [noun]	39
14	it was [adj] [verb] that [noun]	36
15	it be interesting [verb] that [noun]	29
16	it be interesting [verb] that [noun]	29
17	it be [adj] believe that [noun]	26
18	it be [adj] assume that [noun]	26
19	it be [adj] to believe that [noun]	26
20	it be [adj] to assume that [noun]	25
21	it be hard [verb] that [noun]	22
22	it be [adj] remember that [noun]	22
23	it be hard [verb] that [noun]	22
24	it be [adj] to remember that [noun]	22
25	it be difficult [verb] that [noun]	20
26	it be difficult [verb] that [noun]	20
27	it be fair [verb] that [noun]	19
28	it be fair [verb] that [noun]	19
29	it be easy [verb] that [noun]	18
30	it be easy [verb] that [noun]	18