SN4 ""

No	Pattern	Freq
1	[is] [adj] [is] that	315
2	[is] [adj] is that	315
3	[is] [adj] [is] that	304
4	is [adj] [is] that	286
5	[is] certain [is] that	63
6	[is] certain [is] that	63
7	[is] clear [is] that	58
8	[is] clear [is] that	57
9	[is] important [is] that	39
10	[is] important [is] that	39
11	's [adj] [is] that	29
12	[is] interesting [is] that	17
13	[is] interesting [is] that	17
14	[is] surprising [is] that	11
15	[is] surprising [is] that	11
16	[is] true [is] that	8
17	[is] necessary [is] that	8
18	[is] remarkable [is] that	8
19	[is] [adj -er] [is] that	8
20	[is] true [is] that	8
21	[is] necessary [is] that	8
22	[is] new [is] that	8
23	[is] remarkable [is] that	8
24	[is] new [is] that	8
25	[is] worse [is] that	7
26	[is] bad [is] that	7
27	[is] worrying [is] that	6
28	[is] worrying [is] that	6
29	[is] concerned [is] that	5
30	[is] concerned [is] that	5