ciels icels ceils ecils iecls eicls ciles icles clies lcies ilces lices celis eclis cleis lceis elcis lecis ielcs eilcs ilecs liecs elics leics ciesl icesl ceisl ecisl iecsl eicsl cisel icsel csiel sciel iscel sicel cesil ecsil cseil sceil escil secil iescl eiscl isecl siecl esicl seicl cilse iclse clise lcise ilcse licse cisle icsle csile scile iscle sicle clsie lcsie cslie sclie lscie slcie ilsce lisce islce silce lsice slice celsi eclsi clesi lcesi elcsi lecsi cesli ecsli cseli sceli escli secli clsei lcsei cslei sclei lscei slcei elsci lesci eslci selci lseci sleci ielsc eilsc ilesc liesc elisc leisc ieslc eislc iselc sielc esilc seilc ilsec lisec islec silec lsiec sliec elsic lesic eslic selic lseic sleic
Note: these 'words' (valid or invalid) are all the permutations of the word ciels. These words are obtained by scrambling the letters in ciels.