SN4 ""

No	Pattern	Freq
1	it be [adj] [to-vb] that [noun]	347
2	it is [adj] [to-vb] that [noun]	277
3	it be [adj] [to-vb] that [noun prp]	116
4	it be [adj] [to-vb] that [noun sg]	111
5	it be [adj] [to-vb] that [noun pl]	101
6	it be important [to-vb] that [noun]	77
7	it be important [to-vb] that [noun]	77
8	it be [adj] to note that [noun]	47
9	it be [adj] to say that [noun]	40
10	it 's [adj] [to-vb] that [noun]	39
11	it was [adj] [to-vb] that [noun]	34
12	it be interesting [to-vb] that [noun]	29
13	it be interesting [to-vb] that [noun]	29
14	it be [adj] to believe that [noun]	26
15	it be [adj] to assume that [noun]	25
16	it be hard [to-vb] that [noun]	22
17	it be hard [to-vb] that [noun]	22
18	it be [adj] to remember that [noun]	22
19	it be difficult [to-vb] that [noun]	20
20	it be difficult [to-vb] that [noun]	20
21	it be fair [to-vb] that [noun]	19
22	it be fair [to-vb] that [noun]	19
23	it be easy [to-vb] that [noun]	18
24	it be easy [to-vb] that [noun]	18
25	it be possible [to-vb] that [noun]	16
26	it be [adj] to know that [noun]	16
27	it be possible [to-vb] that [noun]	16
28	it be [adj] [to-vb] that [n mass]	15
29	it be [adj] to see that [noun]	14
30	it be good [to-vb] that [noun]	14