darts adrts drats rdats ardts radts datrs adtrs dtars tdars atdrs tadrs drtas rdtas dtras tdras rtdas trdas artds ratds atrds tards rtads trads darst adrst drast rdast ardst radst dasrt adsrt dsart sdart asdrt sadrt drsat rdsat dsrat sdrat rsdat srdat arsdt rasdt asrdt sardt rsadt sradt datsr adtsr dtasr tdasr atdsr tadsr dastr adstr dsatr sdatr asdtr sadtr dtsar tdsar dstar sdtar tsdar stdar atsdr tasdr astdr satdr tsadr stadr drtsa rdtsa dtrsa tdrsa rtdsa trdsa drsta rdsta dsrta sdrta rsdta srdta dtsra tdsra dstra sdtra tsdra stdra rtsda trsda rstda srtda tsrda strda artsd ratsd atrsd tarsd rtasd trasd arstd rastd asrtd sartd rsatd sratd atsrd tasrd astrd satrd tsard stard rtsad trsad rstad srtad tsrad strad
Note: these 'words' (valid or invalid) are all the permutations of the word darts. These words are obtained by scrambling the letters in darts.