DB<101> @list= ("a".."c","DBIC","A".."C","DANCER","a".."c") => ("a", "b", "c", "DBIC", "A", "B", "C", "DANCER", "a", "b", "c") DB<102> grep { /DBIC/ .. /DANCER/ and ! /DBIC/ and ! /DANCER/ } @list => ("A", "B", "C")