SN4 ""

No	Pattern	Freq
1	[noun] it is [adv] [adj] that	173
2	[noun] it is [adv] [adj] that	173
3	[noun] it is [adv] [adj] that	121
4	[noun sg] it is [adv] [adj] that	120
5	[noun] it is [adv] surprising that	68
6	[noun] it is [adv] surprising that	68
7	[noun] it is [not/n't] [adj] that	52
8	[noun] it is not [adj] that	52
9	[noun] it is not [adj] that	52
10	[noun pl] it is [adv] [adj] that	46
11	[noun] it is hardly [adj] that	18
12	[noun] it is hardly [adj] that	18
13	[noun] it is [adv] important that	16
14	[noun] it is [adv] important that	16
15	[noun] it is [adv] likely that	14
16	[noun] it is [adv] likely that	14
17	[noun] it is quite [adj] that	13
18	[noun] it is quite [adj] that	13
19	[noun] it is very [adj] that	10
20	[noun] it is very [adj] that	10
21	[noun] it is most [adj] that	9
22	[noun] it is most [adj] that	9
23	circumstance it is [adv] [adj] that	8
24	[noun] it is more [adj] that	8
25	circumstances it is [adv] [adj] that	8
26	[noun] it is more [adj] that	8
27	[noun] it is [adv] unlikely that	7
28	[noun] it is [adv] unlikely that	7
29	[noun] it is [adv] clear that	6
30	case it is [adv] [adj] that	6