SN4 ""

No	Pattern	Freq
1	it is [adj] that [det] [noun]	506
2	it is [adj] that [det] [noun sg]	239
3	it is [adj] that [det] [noun pl]	237
4	it is [adj] that this [noun]	119
5	it is clear that [det] [noun]	69
6	it is clear that [det] [noun]	69
7	it is likely that [det] [noun]	68
8	it is likely that [det] [noun]	68
9	it is [adj] that some [noun]	67
10	it is [adj] that these [noun]	60
11	it is [adj] that such [noun]	55
12	it is [adj] that all [noun]	47
13	it is possible that [det] [noun]	44
14	it is possible that [det] [noun]	44
15	it is unlikely that [det] [noun]	43
16	it is unlikely that [det] [noun]	43
17	it is [adj] that any [noun]	39
18	it is important that [det] [noun]	38
19	it is important that [det] [noun]	38
20	it is essential that [det] [noun]	37
21	it is true that [det] [noun]	37
22	it is true that [det] [noun]	37
23	it is essential that [det] [noun]	37
24	it is [adj] that many [noun]	31
25	it is [adj] that [det] [n mass]	26
26	it is [adj] that most [noun]	21
27	it is [adj] that [det] people	20
28	it is [adj] that [det] people	20
29	it is probable that [det] [noun]	15
30	it is probable that [det] [noun]	15