CREATE TABLE table_9539 ("Tournament" TEXT, "2006" TEXT, "2007" TEXT, "2008" TEXT, "2009" TEXT, "2010" TEXT, "2011" TEXT, "2012" TEXT)

What 2010 has an A 2006 & 2011?
SELECT "2010" FROM table_9539 WHERE "2006" = 'a' AND "2011" = 'a'
SELECT "2010" FROM "table_9539" WHERE "2006" = 'a' AND "2011" = 'a'