SN4 ""

No	Pattern	Freq
1	it [verb] [adj] that the [adj]	135
2	it [verb] [adj] that the [adj]	117
3	it seem [adj] that the [adj]	90
4	it [vb -s] [adj] that the [adj]	85
5	it seems [adj] that the [adj]	76
6	it [vb past] [adj] that the [adj]	48
7	it become [adj] that the [adj]	38
8	it [verb] likely that the [adj]	36
9	it became [adj] that the [adj]	33
10	it [verb] clear that the [adj]	29
11	it seemed [adj] that the [adj]	13
12	it [verb] apparent that the [adj]	12
13	it [verb] unlikely that the [adj]	11
14	it [verb] [adj] that the new	8
15	it [verb] [adj] that the new	8
16	it [verb] [adj] that the [num]	7
17	it [verb] inevitable that the [adj]	6
18	it [verb] probable that the [adj]	6
19	it [verb] [adj] that the two	5
20	it [verb] [adj] that the first	5
21	it [verb] [adj] that the first	5
22	it [verb] [adj] that the two	5
23	it [verb] possible that the [adj]	5
24	it [verb] obvious that the [adj]	5
25	it [verb] [adj] that the [num ord]	5
26	it remain [adj] that the [adj]	5