SN4 ""

No	Pattern	Freq
1	[vb pp] but [adv]	539
2	[vb pp] but also	77
3	[vb pp] but only	40
4	[vb pp] but still	32
5	[vb pp] but never	30
6	[vb pp] but then	29
7	[vb pp] but now	20
8	[vb pp] but rather	15
9	made but [adv]	10
10	known but [adv]	9
11	done but [adv]	9
12	[vb pp] but later	9
13	[vb pp] but so	9
14	[vb pp] but perhaps	8
15	used but [adv]	8
16	[vb pp] but more	8
17	[vb pp] but often	8
18	[vb pp] but even	8
19	described but [adv]	7
20	[vb pp] but very	7
21	changed but [adv]	7
22	[vb pp] but nevertheless	6
23	involved but [adv]	6
24	[vb pp] but otherwise	5
25	[vb pp] but merely	5
26	[vb pp] but quite	5
27	[vb pp] but little	5
28	lost but [adv]	5
29	[vb pp] but less	5
30	[vb pp] but once	5