SN4 ""

No	Pattern	Freq
1	it [was/were] [adv] [adj] that	764
2	it was [adv] [adj] that	759
3	it [was/were] [adv] [adj] that	750
4	it [was/were] [adv] [adj] that	654
5	it [was/were] not [adj] that	110
6	it [was/were] [not/n't] [adj] that	110
7	it [was/were] [adv] surprising that	99
8	it [was/were] [adv] surprising that	99
9	it [was/were] so [adj] that	89
10	it [was/were] so [adj] that	89
11	it [was/were] [adv] clear that	88
12	it [was/were] [adv] clear that	88
13	it [was/were] not [adj] that	86
14	it [was/were] also [adj] that	63
15	it [was/were] also [adj] that	63
16	it [was/were] quite [adj] that	61
17	it [was/were] quite [adj] that	61
18	it [was/were] [adv] obvious that	51
19	it [was/were] [adv] obvious that	51
20	it [was/were] [adv] possible that	45
21	it [was/were] [adv] possible that	45
22	it [was/were] hardly [adj] that	43
23	it [was/were] hardly [adj] that	43
24	it [was/were] very [adj] that	42
25	it [was/were] very [adj] that	42
26	it [was/were] [adv] apparent that	35
27	it [was/were] [adv] apparent that	35
28	it [was/were] [adv] likely that	34
29	it [was/were] [adv] likely that	34
30	it [was/were] [adv] true that	29