regar ergar rgear grear egrar gerar reagr eragr raegr aregr eargr aergr rgaer graer rager arger garer agrer egarr gearr eagrr aegrr gaerr agerr regra ergra rgera grera egrra gerra rerga errga rrega rrega errga rerga rgrea grrea rrgea rrgea grrea rgrea egrra gerra ergra regra grera rgera rearg erarg raerg arerg earrg aerrg rerag errag rreag rreag errag rerag rareg arreg rraeg rraeg arreg rareg earrg aerrg erarg rearg arerg raerg rgare grare ragre argre garre agrre rgrae grrae rrgae rrgae grrae rgrae rarge arrge rrage rrage arrge rarge garre agrre grare rgare argre ragre egarr gearr eagrr aegrr gaerr agerr egrar gerar ergar regar grear rgear eargr aergr eragr reagr aregr raegr garer agrer graer rgaer arger rager
Note: these 'words' (valid or invalid) are all the permutations of the word regar. These words are obtained by scrambling the letters in regar.