cirls icrls crils rcils ircls ricls cilrs iclrs clirs lcirs ilcrs licrs crlis rclis clris lcris rlcis lrcis irlcs rilcs ilrcs lircs rlics lrics cirsl icrsl crisl rcisl ircsl ricsl cisrl icsrl csirl scirl iscrl sicrl crsil rcsil csril scril rscil srcil irscl riscl isrcl sircl rsicl sricl cilsr iclsr clisr lcisr ilcsr licsr cislr icslr csilr scilr isclr siclr clsir lcsir cslir sclir lscir slcir ilscr liscr islcr silcr lsicr slicr crlsi rclsi clrsi lcrsi rlcsi lrcsi crsli rcsli csrli scrli rscli srcli clsri lcsri cslri sclri lscri slcri rlsci lrsci rslci srlci lsrci slrci irlsc rilsc ilrsc lirsc rlisc lrisc irslc rislc isrlc sirlc rsilc srilc ilsrc lisrc islrc silrc lsirc slirc rlsic lrsic rslic srlic lsric slric
Note: these 'words' (valid or invalid) are all the permutations of the word cirls. These words are obtained by scrambling the letters in cirls.