SN4 ""

No	Pattern	Freq
1	it is [adv] [adj] that [noun]	420
2	it is [adv] [adj] that [noun]	420
3	it is [adv] [adj] that [noun prp]	148
4	it is [adv] [adj] that [noun pl]	136
5	it is [adv] [adj] that [noun sg]	112
6	it is also [adj] that [noun]	59
7	it is [adv] true that [noun]	53
8	it is [adv] true that [noun]	53
9	it is [adv] surprising that [noun]	47
10	it is [adv] surprising that [noun]	47
11	it is [adv] possible that [noun]	42
12	it is [adv] possible that [noun]	42
13	it is [adv] important that [noun]	41
14	it is [adv] important that [noun]	41
15	it is [adv] likely that [noun]	35
16	it is [adv] likely that [noun]	35
17	it is hardly [adj] that [noun]	35
18	it is [adv] clear that [noun]	34
19	it is [adv] clear that [noun]	34
20	it is quite [adj] that [noun]	30
21	it is very [adj] that [noun]	22
22	it is therefore [adj] that [noun]	21
23	it is certainly [adj] that [noun]	21
24	it is [adv] unlikely that [noun]	19
25	it is [adv] unlikely that [noun]	19
26	it is [adv] [adj] that [n mass]	19
27	it is more [adj] that [noun]	17
28	it is [adv] certain that [noun]	16
29	it is [adv] certain that [noun]	16
30	it is highly [adj] that [noun]	14