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