SN4 ""

No	Pattern	Freq
1	it [be] [adv] [adj] that [adj]	602
2	it be [adv] [adj] that [adj]	602
3	it [is] [adv] [adj] that [adj]	523
4	it is [adv] [adj] that [adj]	473
5	it [be] [adv] [adj] that [det]	399
6	it [be] [adv] [adj] that [adj]	174
7	it [be] [adv] [adj] that this	88
8	it [be] [adv] [adj] that this	88
9	it [be] also [adj] that [adj]	81
10	it [was/were] [adv] [adj] that [adj]	78
11	it was [adv] [adj] that [adj]	77
12	it [be] [adv] clear that [adj]	64
13	it [be] [adv] likely that [adj]	63
14	it [be] [adv] [adj] that some	61
15	it [be] [adv] [adj] that some	61
16	it [be] [adv] possible that [adj]	58
17	it [be] [adv] surprising that [adj]	52
18	it [be] hardly [adj] that [adj]	50
19	it [be] [adv] true that [adj]	50
20	it 's [adv] [adj] that [adj]	50
21	it [be] quite [adj] that [adj]	49
22	it [be] [adv] [adj] that many	49
23	it [be] [adv] [adj] that many	49
24	it [be] [adv] important that [adj]	44
25	it [be] very [adj] that [adj]	42
26	it [be] [adv] unlikely that [adj]	41
27	it [be] [adv] [adj] that any	34
28	it [be] [adv] [adj] that any	34
29	it [be] highly [adj] that [adj]	30
30	it [be] [adv] [adj] that these	29