SN4 ""

No	Pattern	Freq
1	[noun] but not [adv]	260
2	[noun sg] but not [adv]	164
3	[noun pl] but not [adv]	80
4	[noun] but not necessarily	29
5	[noun] but not so	26
6	[noun] but not yet	24
7	[noun] but not enough	16
8	[noun prp] but not [adv]	14
9	[noun] but not quite	11
10	[noun] but not as	10
11	[noun] but not too	9
12	[noun] but not very	9
13	[noun] but not now	8
14	[noun] but not actually	6
15	time but not [adv]	6
16	[noun] but not much	6
17	[noun] but not just	5
18	[noun] but not even	5