SN4 ""

No	Pattern	Freq
1	[conj] it is [adj] that it	47
2	[coord] it is [adj] that it	30
3	and it is [adj] that it	17
4	and it is [adj] that it	17
5	[adv] it is [adj] that it	14
6	[adv] it is [adj] that it	14
7	but it is [adj] that it	13
8	[noun] it is [adj] that it	13
9	but it is [adj] that it	13
10	[subord] it is [adj] that it	12
11	[noun sg] it is [adj] that it	8
12	[verb] it is [adj] that it	7
13	[noun pl] it is [adj] that it	5
14	[that] it is [adj] that it	5
15	that it is [adj] that it	5
16	then it is [adj] that it	5
17	that it is [adj] that it	5
18	then it is [adj] that it	5
19	it is [adv] [adj] that it	91
20	it is [adv] [adj] that it	68
21	it is not [adj] that it	23
22	it is not [adj] that it	23
23	it is [not/n't] [adj] that it	23
24	it is so [adj] that it	12
25	it is so [adj] that it	12
26	it is very [adj] that it	6
27	it is very [adj] that it	6
28	it is more [adj] that it	5
29	it is more [adj] that it	5
30	it is quite [adj] that it	5