SN4 ""

No	Pattern	Freq
1	it be [adj] [to-vb] that [noun]	347
2	it is [adj] [verb] that [noun]	275
3	it be [adj] [verb] that [noun prp]	115
4	it be [adj] [verb] that [noun sg]	110
5	it be [adj] [verb] that [noun pl]	100
6	it be important [verb] that [noun]	77
7	it be [adj] note that [noun]	48
8	it be [adj] to note that [noun]	47
9	it be [adj] to say that [noun]	39
10	it be [adj] say that [noun]	39
11	it 's [adj] [verb] that [noun]	39
12	it was [adj] [verb] that [noun]	34
13	it be interesting [verb] that [noun]	29
14	it be [adj] to believe that [noun]	26
15	it be [adj] assume that [noun]	26
16	it be [adj] believe that [noun]	26
17	it be [adj] to assume that [noun]	25
18	it be [adj] to remember that [noun]	22
19	it be hard [verb] that [noun]	22
20	it be [adj] remember that [noun]	22
21	it be difficult [verb] that [noun]	20
22	it be fair [verb] that [noun]	19
23	it be easy [verb] that [noun]	18
24	it be [adj] [verb] that [n mass]	16
25	it be possible [verb] that [noun]	16
26	it be [adj] know that [noun]	16
27	it be [adj] to know that [noun]	16
28	it be good [verb] that [noun]	14
29	it be [adj] see that [noun]	14
30	it be [adj] to see that [noun]	14