SN4 ""

No	Pattern	Freq
1	[conj] [det] is [prep] [det]	32
2	[coord] [det] is [prep] [det]	14
3	[subord] [det] is [prep] [det]	14
4	[verb] [det] is [prep] [det]	12
5	but [det] is [prep] [det]	9
6	but [det] is [prep] [det]	9
7	[adj] [det] is [prep] [det]	6
8	[prep] [det] is [prep] [det]	6
9	[prep] [det] is [prep] [det]	6
10	and [det] is [prep] [det]	5
11	if [det] is [prep] [det]	5
12	and [det] is [prep] [det]	5
13	although [det] is [prep] [det]	5
14	although [det] is [prep] [det]	5
15	if [det] is [prep] [det]	5
16	[det] [noun] is [prep] [det]	84
17	[det] [noun sg] is [prep] [det]	78
18	[det] is [adj] [prep] [det]	207
19	[det] is [adj] [prep] [det]	158
20	[det] is [verb] [prep] [det]	151
21	[det] is [vb pp] [prep] [det]	139
22	[det] is true [prep] [det]	59
23	[det] is true [prep] [det]	59
24	[det] is [adv] [prep] [det]	51
25	[det] is one [prep] [det]	38
26	[det] is [num] [prep] [det]	38
27	[det] is [not/n't] [prep] [det]	38
28	[det] is one [prep] [det]	38
29	[det] is not [prep] [det]	38
30	[det] is not [prep] [det]	32