arbas rabas abras baras rbaas braas arabs raabs aarbs aarbs raabs arabs abars baars aabrs aabrs baars abars rbaas braas rabas arbas baras abras arbsa rabsa abrsa barsa rbasa brasa arsba rasba asrba sarba rsaba sraba absra basra asbra sabra bsara sbara rbsaa brsaa rsbaa srbaa bsraa sbraa arasb raasb aarsb aarsb raasb arasb arsab rasab asrab sarab rsaab sraab aasrb aasrb asarb saarb asarb saarb rasab arsab rsaab sraab asrab sarab abasr baasr aabsr aabsr baasr abasr absar basar asbar sabar bsaar sbaar aasbr aasbr asabr saabr asabr saabr basar absar bsaar sbaar asbar sabar rbasa brasa rabsa arbsa barsa abrsa rbsaa brsaa rsbaa srbaa bsraa sbraa rasba arsba rsaba sraba asrba sarba basra absra bsara sbara asbra sabra
Note: these 'words' (valid or invalid) are all the permutations of the word arbas. These words are obtained by scrambling the letters in arbas.