fisty ifsty fsity sfity isfty sifty fitsy iftsy ftisy tfisy itfsy tifsy fstiy sftiy ftsiy tfsiy stfiy tsfiy istfy sitfy itsfy tisfy stify tsify fisyt ifsyt fsiyt sfiyt isfyt sifyt fiyst ifyst fyist yfist iyfst yifst fsyit sfyit fysit yfsit syfit ysfit isyft siyft iysft yisft syift ysift fitys iftys ftiys tfiys itfys tifys fiyts ifyts fyits yfits iyfts yifts ftyis tfyis fytis yftis tyfis ytfis ityfs tiyfs iytfs yitfs tyifs ytifs fstyi sftyi ftsyi tfsyi stfyi tsfyi fsyti sfyti fysti yfsti syfti ysfti ftysi tfysi fytsi yftsi tyfsi ytfsi styfi tsyfi sytfi ystfi tysfi ytsfi istyf sityf itsyf tisyf stiyf tsiyf isytf siytf iystf yistf syitf ysitf itysf tiysf iytsf yitsf tyisf ytisf styif tsyif sytif ystif tysif ytsif
Note: these 'words' (valid or invalid) are all the permutations of the word fisty. These words are obtained by scrambling the letters in fisty.