SN4 ""

No	Pattern	Freq
1	it be [verb] that [adj]	1652
2	it be [vb pp] that [adj]	1625
3	it be [verb] that [det]	973
4	it is [verb] that [adj]	815
5	it was [verb] that [adj]	775
6	it be [verb] that [adj]	460
7	it be [verb] that this	361
8	it be [verb] that this	361
9	it be [verb] that [num]	195
10	it be hope that [adj]	132
11	it be hoped that [adj]	132
12	it be [verb] that these	113
13	it be [verb] that these	113
14	it be [verb] that some	104
15	it be [verb] that some	104
16	it be suggest that [adj]	92
17	it be suggested that [adj]	91
18	it be estimated that [adj]	88
19	it be estimate that [adj]	88
20	it be feel that [adj]	78
21	it be felt that [adj]	78
22	it be think that [adj]	73
23	it be thought that [adj]	73
24	it be [verb] that all	72
25	it be [verb] that all	72
26	it be [verb] that such	70
27	it be [verb] that such	70
28	it be find that [adj]	68
29	it be found that [adj]	67
30	it be argued that [adj]	64