guars ugars gaurs agurs uagrs augrs guras ugras gruas rguas urgas rugas garus agrus graus rgaus argus ragus uargs aurgs urags ruags arugs raugs guasr ugasr gausr agusr uagsr augsr gusar ugsar gsuar sguar usgar sugar gasur agsur gsaur sgaur asgur sagur uasgr ausgr usagr suagr asugr saugr gursa ugrsa grusa rgusa urgsa rugsa gusra ugsra gsura sgura usgra sugra grsua rgsua gsrua sgrua rsgua srgua ursga rusga usrga surga rsuga sruga garsu agrsu grasu rgasu argsu ragsu gasru agsru gsaru sgaru asgru sagru grsau rgsau gsrau sgrau rsgau srgau arsgu rasgu asrgu sargu rsagu sragu uarsg aursg urasg ruasg arusg rausg uasrg ausrg usarg suarg asurg saurg ursag rusag usrag surag rsuag sruag arsug rasug asrug sarug rsaug sraug
Note: these 'words' (valid or invalid) are all the permutations of the word guars. These words are obtained by scrambling the letters in guars.