SN4 ""

No	Pattern	Freq
1	[conj] [adv] it is [that]	5
2	[adv] [adj] it is [that]	47
3	[adv] [adj] it is [that]	47
4	[adv] likely it is [that]	45
5	[adv] likely it is [that]	45
6	[adv] [Wh det] it is [that]	22
7	[adv] [pron] it is [that]	22
8	[adv] what it is [that]	21
9	[adv] what it is [that]	21
10	[adv] [adv] it is [that]	9
11	[adv] [Wh adv] it is [that]	8
12	[adv] it is [adj] [that]	320
13	[adv] it is [adj] [that]	317
14	[adv] it is [verb] [that]	115
15	[adv] it is [vb pp] [that]	113
16	[adv] it is clear [that]	70
17	[adv] it is clear [that]	70
18	[adv] it is likely [that]	38
19	[adv] it is likely [that]	38
20	[adv] it is possible [that]	35
21	[adv] it is possible [that]	35
22	[adv] it is important [that]	22
23	[adv] it is important [that]	22
24	[adv] it is true [that]	22
25	[adv] it is true [that]	22
26	[adv] it is essential [that]	15
27	[adv] it is essential [that]	15
28	[adv] it is unlikely [that]	13
29	[adv] it is unlikely [that]	13
30	[adv] it is argued [that]	12