SN4 ""

No	Pattern	Freq
1	[conj] it is [verb] that	43
2	[subord] it is [verb] that	23
3	[coord] it is [verb] that	17
4	[noun] it is [verb] that	14
5	and it is [verb] that	11
6	and it is [verb] that	11
7	[noun sg] it is [verb] that	11
8	if it is [verb] that	8
9	if it is [verb] that	8
10	once it is [verb] that	5
11	but it is [verb] that	5
12	once it is [verb] that	5
13	but it is [verb] that	5
14	it is [adj] [verb] that	172
15	it is [adj] [verb] that	166
16	it is [adv] [verb] that	65
17	it is [adv] [verb] that	61
18	it is important [verb] that	39
19	it is important [verb] that	39
20	it is [prep] [verb] that	25
21	it is interesting [verb] that	25
22	it is interesting [verb] that	25
23	it is [prep] [verb] that	25
24	it is worth [verb] that	22
25	it is worth [verb] that	22
26	it is generally [verb] that	14
27	it is generally [verb] that	14
28	it is reasonable [verb] that	12
29	it is reasonable [verb] that	12
30	it is difficult [verb] that	11