Name the 2008 with 2012 of 2r and 2006 of 2r
CREATE TABLE "doubles_performance_timeline" (
  "tournament" text,
  "2006" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text,
  "2013" text
);
SELECT "2008" FROM "doubles_performance_timeline" WHERE "2012"='2r' AND "2006"='2r';