6/26/72 BASED2.4F 195 2/28/72 BASCM1.8E 234 2/28/72 BASLD1.2C 33 2/28/72 BASEXC.3A 10 2/28/72 BASIN2.4J 239 2/28/72 19 19 FREE BLOCKS BASED2.??? 195 2/28/80 BASCM1.??? 234 2/28/80 BASLD1.??? 33 2/28/80 BASEXC.??? 10 2/28/80 BASIN2.??? 239 2/28/80 .EMPTY. 19