SN4 ""

No	Pattern	Freq
1	[conj] it is [adj] that [adj]	310
2	[coord] it is [adj] that [adj]	188
3	and it is [adj] that [adj]	117
4	and it is [adj] that [adj]	117
5	[subord] it is [adj] that [adj]	88
6	[noun] it is [adj] that [adj]	86
7	but it is [adj] that [adj]	65
8	but it is [adj] that [adj]	65
9	[adv] it is [adj] that [adj]	64
10	[noun sg] it is [adj] that [adj]	58
11	[adv] it is [adj] that [adj]	56
12	that it is [adj] that [adj]	34
13	[that] it is [adj] that [adj]	34
14	that it is [adj] that [adj]	34
15	[verb] it is [adj] that [adj]	30
16	while it is [adj] that [adj]	22
17	while it is [adj] that [adj]	22
18	[noun pl] it is [adj] that [adj]	22
19	then it is [adj] that [adj]	15
20	although it is [adj] that [adj]	15
21	although it is [adj] that [adj]	15
22	then it is [adj] that [adj]	15
23	[vb base] it is [adj] that [adj]	14
24	so it is [adj] that [adj]	8
25	so it is [adj] that [adj]	8
26	though it is [adj] that [adj]	8
27	though it is [adj] that [adj]	8
28	if it is [adj] that [adj]	7
29	[Wh adv] it is [adj] that [adj]	7
30	if it is [adj] that [adj]	7