flics lfics filcs iflcs lifcs ilfcs flcis lfcis fclis cflis lcfis clfis ficls ifcls fcils cfils icfls cifls licfs ilcfs lcifs clifs iclfs cilfs flisc lfisc filsc iflsc lifsc ilfsc flsic lfsic fslic sflic lsfic slfic fislc ifslc fsilc sfilc isflc siflc lisfc ilsfc lsifc slifc islfc silfc flcsi lfcsi fclsi cflsi lcfsi clfsi flsci lfsci fslci sflci lsfci slfci fcsli cfsli fscli sfcli csfli scfli lcsfi clsfi lscfi slcfi cslfi sclfi ficsl ifcsl fcisl cfisl icfsl cifsl fiscl ifscl fsicl sficl isfcl sifcl fcsil cfsil fscil sfcil csfil scfil icsfl cisfl iscfl sicfl csifl scifl licsf ilcsf lcisf clisf iclsf cilsf liscf ilscf lsicf slicf islcf silcf lcsif clsif lscif slcif cslif sclif icslf cislf isclf siclf csilf scilf
Note: these 'words' (valid or invalid) are all the permutations of the word flics. These words are obtained by scrambling the letters in flics.