RTRS -SPAIN SELLS EU5.64 BLN OF BILLS VS MAXIMUM TARGET OF EU4.5 BLN RTRS-SPAIN SAYS 3-MONTH BILL AVERAGE YIELD 1.735 PCT VS 5.110 PCT AT PREVIOUS AUCTION RTRS-SPAIN SAYS 6-MONTH BILL AVERAGE YIELD 2.435 PCT VS 5.227 PCT AT PREVIOUS AUCTION http://ftalphaville.ft.com/blog/2011/12/20/807531/viva-espana/