SN4 ""

No	Pattern	Freq
1	[adj] but not a [adj]	13
2	[adj] but not a [adj]	12
3	[noun] but not a [adj]	10
4	[noun sg] but not a [adj]	8
5	but not [prep] a [adj]	52
6	but not [prep] a [adj]	52
7	but not for a [adj]	13
8	but not for a [adj]	13
9	but not [adv] a [adj]	12
10	but not [adv] a [adj]	12
11	but not in a [adj]	11
12	but not in a [adj]	11
13	but not to a [adj]	8
14	but not to a [adj]	8
15	but not necessarily a [adj]	6
16	but not [verb] a [adj]	6
17	but not necessarily a [adj]	6
18	but not a [adv] [adj]	11
19	but not a [adv] [adj]	11
20	but not a very [adj]	9
21	but not a very [adj]	9
22	but not a [adj] [adj]	5
23	but not a [adj] [adj]	5
24	but not a [adj] [noun]	67
25	but not a [adj] [noun sg]	65
26	but not a [adj] one	12
27	but not a [adj] [pron]	12
28	but not a [adj] one	12
29	but not a [adj] [indef pn]	12
30	but not a [adj] deal	7