SN4 ""

No	Pattern	Freq
1	[adj] is that	756
2	clear is that	91
3	certain is that	81
4	important is that	69
5	interesting is that	33
6	common is that	30
7	surprising is that	17
8	remarkable is that	17
9	obvious is that	16
10	true is that	16
11	likely is that	13
12	apparent is that	11
13	essential is that	10
14	worrying is that	10
15	new is that	10
16	necessary is that	9
17	extraordinary is that	7
18	wrong is that	7
19	significant is that	7
20	different is that	6
21	sure is that	6
22	concerned is that	6
23	evident is that	5
24	particular is that	5
25	disturbing is that	5
26	relevant is that	5